Opus Folksy (Boneyard + Walls) vs GPT5 Teach (Goblins + Snow)
1 major, 8 moderate, 11 minor, 1 questionable blunders
Season 1
/ 306
Stack
Game Log
gameGPT5 Teach's library is shuffled
gameOpus Folksy's library is shuffled
thinkingOpus Folksy
I'll choose to go first — as they say, the early bird catches the worm!
mcpOpus Folksyraw
choose_action(id=p2)
{
"next_action_pending": true,
"next_action_type": "GAME_ASK",
"game_seq": 5,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_target_0",
"next_action_message": "Mulligan down to 6 cards?"
}thinkingOpus Folksy
Time to see what hand we're dealt. Let's take a look at the mulligan decision.
gameOpus Folksy chooses that they take the first turn
thinkingOpus Folksy
This hand has a good mix of lands — 3 Forests and 3 Swamps — plus a Spark Reaper as a creature. It's a keepable 7-card hand. Not the most explosive, but we've got our mana base covered and a play for turn 3. As they say, a bird in the hand is worth two in the bush!
GPT5 Teachllm
pass_priority(until=upkeep, board_cursor=0)
{
"game_seq": 8,
"action_type": "GAME_ASK",
"context": "T1 ()",
"stop_reason": "non_priority_action",
"response_type": "boolean",
"respond_with": "answer=true or answer=false",
"message": "Mulligan down to 6 cards?",
"board_cursor": 1,
"your_hand": [
{
"mana_cost": "{2}{U}",
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
]
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
]
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
]
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"toughness": "4"
},
{
"mana_cost": "{1}{R}",
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"power": "2",
"toughness": "1"
},
{
"name": "Snow-Covered Island",
"is_land": true,
"rules": [
"{T}: Add {U}."
]
},
{
"name": "Snow-Covered Island",
"is_land": true,
"rules": [
"{T}: Add {U}."
]
}
],
"board": [
{
"hand_size": 7,
"is_active": false,
"is_you": true,
"name": "GPT5 Teach",
"library_size": 33,
"life": 20,
"hand": [
{
"mana_cost": "{2}{U}",
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
},
{
"mana_cost": "{1}{R}",
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"power": "2",
"id": "p7",
"toughness": "1"
},
{
"name": "Snow-Covered Island",
"is_land": true,
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"name": "Snow-Covered Island",
"is_land": true,
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
]
},
{
"hand_size": 7,
"is_active": false,
"is_you": false,
"name": "Opus Folksy",
"library_size": 33,
"life": 20
}
],
"action_pending": true
}Opus FolksymcpKeep hand
raw
choose_action(answer=false)
{
"game_seq": 7,
"success": true,
"action_taken": "no"
}thinkingOpus Folksy
Good, hand is kept. Now let's wait for the game to proceed.
moderate blunder
Kept a 7-card hand with 6 lands and only 1 spell (Spark Reaper).
Kept a 7-card hand with 6 lands and only 1 spell (Spark Reaper). This hand has almost no action and will rely entirely on topdecking to compete. A mulligan to 6 would very likely produce a much better hand with a reasonable spell-to-land ratio.
Analysis
Action taken: Kept a hand with 6 lands and Spark Reaper as the only spell
Better line: Mulligan to 6 to find a hand with a better balance of lands and spells
chatGPT5 Teach: GLHF! Keeping.
GPT5 Teachmcpsend_chat_messagemcpAttack with
raw
send_chat_message(message=GLHF! Keeping.)
{
"success": true
}raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 8,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "no",
"next_action_message": "Play instants and activated abilities"
}gameOpus Folksy skips Draw step
— Precombat Main —
GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=true, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 12,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "confirmed",
"next_action_message": "Play instants and activated abilities"
}— Declare Attackers —
— Postcombat Main —
Opus Folksyllm
pass_priority(board_cursor=2)
{
"game_seq": 17,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"has_playable_cards": true,
"context": "T1 Postcombat Main/Postcombat Main (Opus Folksy) YOUR_MAIN",
"recent_chat": [
"GPT5 Teach: GLHF! Keeping."
],
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 3,
"choices": [
{
"name": "Forest",
"index": 0,
"action": "land",
"id": "p10"
},
{
"name": "Forest",
"index": 1,
"action": "land",
"id": "p11"
},
{
"name": "Forest",
"index": 2,
"action": "land",
"id": "p12"
},
{
"name": "Swamp",
"index": 3,
"action": "land",
"id": "p14"
},
{
"name": "Swamp",
"index": 4,
"action": "land",
"id": "p15"
},
{
"name": "Swamp",
"index": 5,
"action": "land",
"id": "p16"
}
],
"board": [
{
"hand_size": 7,
"is_active": true,
"is_you": true,
"name": "Opus Folksy",
"library_size": 33,
"life": 20,
"hand": [
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p10",
"playable": true
},
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p11",
"playable": true
},
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p12",
"playable": true
},
{
"mana_cost": "{2}{B}",
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"power": "2",
"id": "p13",
"toughness": "3"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p14",
"playable": true
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p15",
"playable": true
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16",
"playable": true
}
]
},
{
"hand_size": 7,
"is_active": false,
"is_you": false,
"name": "GPT5 Teach",
"library_size": 33,
"life": 20
}
]
}thinkingOpus Folksy
Turn 1, let's drop a Swamp so we're on track to cast Spark Reaper on turn 3 (needs 2B — two generic and one black).
mcpPlay Swampraw
choose_action(id=p14)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 17,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_3",
"next_action_message": "Play spells and abilities"
}gameOpus Folksy puts Swamp from hand onto the Battlefield
chatOpus Folksy: Well now, let's see what we've got here. Every journey starts with a single step — or in this case, a single Swamp. Good luck to ya!
Opus Folksyllm
choose_action(answer=false)
{
"game_seq": 20,
"success": true,
"action_taken": "passed_priority"
}Opus Folksymcpsend_chat_message
raw
send_chat_message(message=Well now, let's see what we've got here....)
{
"success": true
}— GPT5 Teach's Turn 1 —
GPT5 Teachllm
pass_priority(until=precombat_main, board_cursor=2)
{
"game_seq": 22,
"action_type": "GAME_SELECT",
"stop_reason": "reached_step",
"response_type": "select",
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"context": "T1 Precombat Main/Precombat Main (GPT5 Teach) YOUR_MAIN",
"recent_chat": [
"Opus Folksy: Well now, let's see what we've got here. Every journey starts with a single step — or in this case, a single Swamp. Good luck to ya!"
],
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 3,
"choices": [
{
"name": "Mountain",
"index": 0,
"action": "land",
"id": "p4"
},
{
"name": "Mountain",
"index": 1,
"action": "land",
"id": "p5"
},
{
"name": "Snow-Covered Island",
"index": 2,
"action": "land",
"id": "p8"
},
{
"name": "Snow-Covered Island",
"index": 3,
"action": "land",
"id": "p9"
}
],
"board": [
{
"hand_size": 8,
"is_active": true,
"is_you": true,
"name": "GPT5 Teach",
"library_size": 32,
"life": 20,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{2}{U}",
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p4",
"playable": true
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p5",
"playable": true
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
},
{
"mana_cost": "{1}{R}",
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"power": "2",
"id": "p7",
"toughness": "1"
},
{
"name": "Snow-Covered Island",
"is_land": true,
"rules": [
"{T}: Add {U}."
],
"id": "p8",
"playable": true
},
{
"name": "Snow-Covered Island",
"is_land": true,
"rules": [
"{T}: Add {U}."
],
"id": "p9",
"playable": true
}
]
},
{
"hand_size": 6,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
}
],
"name": "Opus Folksy",
"library_size": 33,
"life": 20
}
],
"current_step": "Precombat Main"
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p8, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 22,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_2",
"warning": "Both id and index provided; used id=p8, ignored index=0",
"next_action_message": "Play spells and abilities"
}GPT5 Teachllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 26,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play instants and activated abilities"
}minor blunder
Playing Mountain instead of Snow-Covered Island as the first land.
Playing Mountain instead of Snow-Covered Island as the first land. Snow-Covered Island is slightly better because snow mana is more valuable for Icebind Pillar's activated ability and Berg Strider's freeze effect. Either way, Ornery Goblin can be cast on turn 3 by playing Mountain second.
Analysis
Action taken: Played Mountain as first land
Better line: Play Snow-Covered Island to get a snow source online sooner, enabling Icebind Pillar's snow-activated ability and Berg Strider's freeze bonus when cast later
gameGPT5 Teach puts Snow-Covered Island from hand onto the Battlefield
— Declare Attackers —
— Postcombat Main —
— Opus Folksy's Turn 2 —
Opus Folksyllm
pass_priority(until=my_turn, board_cursor=3)
{
"game_seq": 34,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 1,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"has_playable_cards": true,
"context": "T2 Precombat Main/Precombat Main (Opus Folksy) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 4,
"choices": [
{
"name": "Forest",
"index": 0,
"action": "land",
"id": "p10"
},
{
"name": "Forest",
"index": 1,
"action": "land",
"id": "p11"
},
{
"name": "Forest",
"index": 2,
"action": "land",
"id": "p12"
},
{
"name": "Swamp",
"index": 3,
"action": "land",
"id": "p15"
},
{
"name": "Swamp",
"index": 4,
"action": "land",
"id": "p16"
},
{
"name": "Swamp",
"index": 5,
"action": "land",
"id": "p24"
}
],
"board": [
{
"hand_size": 7,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
}
],
"name": "Opus Folksy",
"library_size": 32,
"life": 20,
"hand": [
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p10",
"playable": true
},
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p11",
"playable": true
},
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p12",
"playable": true
},
{
"mana_cost": "{2}{B}",
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"power": "2",
"id": "p13",
"toughness": "3"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p15",
"playable": true
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16",
"playable": true
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p24",
"playable": true
}
]
},
{
"hand_size": 7,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
}
],
"name": "GPT5 Teach",
"library_size": 32,
"life": 20
}
]
}thinkingOpus Folksy
Turn 2 — opponent played a Snow-Covered Island. Let me drop a Forest this time to diversify my mana.
mcpPlay Forestraw
choose_action(id=p10)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 34,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"next_action_message": "Play spells and abilities"
}Opus Folksyllm
choose_action(answer=false)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 38,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play instants and activated abilities"
}gameOpus Folksy puts Forest from hand onto the Battlefield
Opus Folksyllm
choose_action(answer=false)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 42,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play spells and abilities"
}— Declare Attackers —
— Postcombat Main —
Opus Folksyllm
choose_action(answer=false)
{
"game_seq": 44,
"success": true,
"action_taken": "passed_priority"
}— GPT5 Teach's Turn 2 —
GPT5 Teachllm
pass_priority(until=end_of_turn, board_cursor=3)
{
"game_seq": 46,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 1,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"has_playable_cards": true,
"context": "T2 Precombat Main/Precombat Main (GPT5 Teach) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 5,
"choices": [
{
"name": "Mountain",
"index": 0,
"action": "land",
"id": "p4"
},
{
"name": "Mountain",
"index": 1,
"action": "land",
"id": "p5"
},
{
"name": "Snow-Covered Island",
"index": 2,
"action": "land",
"id": "p9"
}
],
"board": [
{
"hand_size": 8,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
}
],
"name": "GPT5 Teach",
"library_size": 31,
"life": 20,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"power": "2",
"id": "p25",
"toughness": "1"
},
{
"mana_cost": "{2}{U}",
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p4",
"playable": true
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p5",
"playable": true
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
},
{
"mana_cost": "{1}{R}",
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"power": "2",
"id": "p7",
"toughness": "1"
},
{
"name": "Snow-Covered Island",
"is_land": true,
"rules": [
"{T}: Add {U}."
],
"id": "p9",
"playable": true
}
]
},
{
"hand_size": 6,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
}
],
"name": "Opus Folksy",
"library_size": 32,
"life": 20
}
]
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p4, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 46,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"warning": "Both id and index provided; used id=p4, ignored index=0",
"next_action_message": "Play spells and abilities"
}gameGPT5 Teach puts Mountain from hand onto the Battlefield
— Declare Attackers —
— Postcombat Main —
GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p7, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 56,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_1",
"warning": "Both id and index provided; used id=p7, ignored index=0",
"next_action_message": "Play instants and activated abilities"
}minor blunder
Cast Goblin Shortcutter in postcombat main phase, completely wasting its ETB trigger that prevents a creature from block…
Cast Goblin Shortcutter in postcombat main phase, completely wasting its ETB trigger that prevents a creature from blocking this turn. Ornery Goblin was available at the same cost with a persistent combat-relevant ability.
Analysis
Action taken: Cast Goblin Shortcutter in postcombat main, wasting its 'can't block this turn' ETB
Better line: Cast Ornery Goblin instead, saving Goblin Shortcutter for a precombat main phase where its ETB can enable attacks past a blocker.
gameGPT5 Teach casts Ornery Goblin from hand
gameGPT5 Teach puts Ornery Goblin from stack onto the Battlefield
— Opus Folksy's Turn 3 —
Opus Folksyllm
pass_priority(until=my_turn, board_cursor=4)
{
"game_seq": 66,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 2,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"has_playable_cards": true,
"context": "T3 Precombat Main/Precombat Main (Opus Folksy) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 5,
"choices": [
{
"name": "Forest",
"index": 0,
"action": "land",
"id": "p11"
},
{
"name": "Forest",
"index": 1,
"action": "land",
"id": "p12"
},
{
"name": "Swamp",
"index": 2,
"action": "land",
"id": "p15"
},
{
"name": "Swamp",
"index": 3,
"action": "land",
"id": "p16"
},
{
"name": "Swamp",
"index": 4,
"action": "land",
"id": "p24"
},
{
"name": "Swamp",
"index": 5,
"action": "land",
"id": "p27"
}
],
"board": [
{
"hand_size": 7,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
}
],
"name": "Opus Folksy",
"library_size": 31,
"life": 20,
"hand": [
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p11",
"playable": true
},
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p12",
"playable": true
},
{
"mana_cost": "{2}{B}",
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"power": "2",
"id": "p13",
"toughness": "3"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p15",
"playable": true
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16",
"playable": true
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p24",
"playable": true
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p27",
"playable": true
}
]
},
{
"hand_size": 6,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": true
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
}
],
"name": "GPT5 Teach",
"library_size": 31,
"life": 20
}
]
}thinkingOpus Folksy
Turn 3 — I drew another Swamp. The opponent has an Ornery Goblin (2/1) that's still summoning sick. Let me play a Swamp so I can cast Spark Reaper this turn (costs 2B — I'll have a Forest, Swamp, and Swamp available).
mcpPlay Swampraw
choose_action(id=p15)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 66,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_2",
"next_action_message": "Play spells and abilities"
}thinkingOpus Folksy
Now let's cast Spark Reaper.
minor blunder
Playing a Swamp when a Forest would have been better for mana diversity.
Playing a Swamp when a Forest would have been better for mana diversity. The player already has a Swamp on board for the black pip on Spark Reaper, and has 4 Swamps vs 2 Forests in hand. Playing Forest would improve color balance for future draws while still enabling Spark Reaper this turn (Forest + existing Swamp + new Forest = 3 mana including 1B).
Analysis
Action taken: Played Swamp as their land drop
Better line: Play Forest to improve mana diversity, since they have 4 Swamps and only 2 Forests in hand, and already have a Swamp on board for black mana needs.
gameOpus Folksy puts Swamp from hand onto the Battlefield
chatOpus Folksy: Slow and steady wins the race, they say. Dropping my Spark Reaper here — a 2/3 ain't much, but it's honest work. I see you brought a Goblin to the party!
Opus FolksymcpCast Spark Reaper {2}{B}mcpsend_chat_message
raw
choose_action(id=p13)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 70,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"next_action_message": "Play instants and activated abilities"
}raw
send_chat_message(message=Slow and steady wins the race, they say....)
{
"success": true
}thinkingOpus Folksy
Spark Reaper is on the stack. Let me pass priority to let it resolve.
llmchoose_action(answer=false)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 75,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play spells and abilities"
}gameOpus Folksy casts Spark Reaper from hand
Opus Folksyllm
choose_action(answer=false)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 78,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play instants and activated abilities"
}gameOpus Folksy puts Spark Reaper from stack onto the Battlefield
Opus Folksyllm
choose_action(answer=false)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 82,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play spells and abilities"
}— Declare Attackers —
— Postcombat Main —
Opus Folksyllm
choose_action(answer=false)
{
"game_seq": 84,
"success": true,
"action_taken": "passed_priority"
}— GPT5 Teach's Turn 3 —
chatGPT5 Teach: Alright, time to get on the board. Curious what you’re brewing over there!
GPT5 Teachllm
pass_priority(until=end_of_turn, board_cursor=6)
{
"game_seq": 86,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 2,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"has_playable_cards": true,
"context": "T3 Precombat Main/Precombat Main (GPT5 Teach) YOUR_MAIN",
"recent_chat": [
"Opus Folksy: Slow and steady wins the race, they say. Dropping my Spark Reaper here — a 2/3 ain't much, but it's honest work. I see you brought a Goblin to the party!"
],
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 7,
"choices": [
{
"mana_cost": "{1}{R}",
"name": "Goblin Instigator",
"index": 0,
"action": "cast",
"id": "p29",
"power": "1",
"toughness": "1"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"index": 1,
"action": "cast",
"id": "p25",
"power": "2",
"toughness": "1"
},
{
"name": "Mountain",
"index": 2,
"action": "land",
"id": "p5"
},
{
"name": "Snow-Covered Island",
"index": 3,
"action": "land",
"id": "p9"
}
],
"board": [
{
"hand_size": 7,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
}
],
"name": "GPT5 Teach",
"library_size": 30,
"life": 20,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"power": "1",
"id": "p29",
"toughness": "1",
"playable": true
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"power": "2",
"id": "p25",
"toughness": "1",
"playable": true
},
{
"mana_cost": "{2}{U}",
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p5",
"playable": true
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
},
{
"name": "Snow-Covered Island",
"is_land": true,
"rules": [
"{T}: Add {U}."
],
"id": "p9",
"playable": true
}
]
},
{
"hand_size": 5,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
}
],
"name": "Opus Folksy",
"library_size": 31,
"life": 20
}
]
}GPT5 Teachmcpsend_chat_message
raw
send_chat_message(message=Alright, time to get on the board. Curio...)
{
"success": true
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 86,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"next_action_message": "Play instants and activated abilities"
}GPT5 Teachllm
pass_priority(until=begin_combat, board_cursor=7)
{
"combat_phase": "attackers",
"game_seq": 101,
"action_type": "GAME_SELECT",
"context": "T3 Combat/Declare Attackers (GPT5 Teach)",
"stop_reason": "combat",
"response_type": "select",
"respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
"message": "Select attackers",
"board_cursor": 8,
"choices": [
{
"name": "Ornery Goblin",
"index": 0,
"choice_type": "attacker",
"id": "p7",
"power": "2",
"toughness": "1"
},
{
"name": "All attack",
"index": 1,
"choice_type": "special",
"id": "all"
}
],
"board": [
{
"hand_size": 6,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29",
"power": "1",
"toughness": "1",
"summoning_sick": true
},
{
"tapped": false,
"name": "Goblin Token",
"id": "p32",
"power": "1",
"toughness": "1",
"summoning_sick": true,
"token": true
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
}
],
"name": "GPT5 Teach",
"library_size": 30,
"life": 20,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"power": "2",
"id": "p25",
"toughness": "1"
},
{
"mana_cost": "{2}{U}",
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
},
{
"name": "Snow-Covered Island",
"is_land": true,
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
]
},
{
"hand_size": 5,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
}
],
"name": "Opus Folksy",
"library_size": 31,
"life": 20
}
],
"action_pending": true
}minor blunder
Cast Goblin Instigator before playing a land drop.
Cast Goblin Instigator before playing a land drop. Should always play the land first to maximize information and flexibility. With the land played first, they'd have 3 mana available and could still cast the same spells, but would retain the option to choose which land to play based on how the spell resolves.
Analysis
Action taken: Cast Goblin Instigator with 2 mana available before using the land drop
Better line: Play Mountain (or Snow-Covered Island) first, then cast Goblin Instigator. Land-before-spell is correct sequencing when there's no reason to delay the land drop.
gameGPT5 Teach casts Goblin Instigator from hand
gameGPT5 Teach puts Goblin Instigator from stack onto the Battlefield
gameGPT5 Teach - Ability triggers: Goblin Instigator - When Goblin Instigator enters, create a 1/1 red Goblin creature token.
gameGPT5 Teach creates a Goblin Token token
— Declare Attackers —
GPT5 TeachmcpAttack with Ornery Goblin 2/1
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=["p7"], blockers=[], id=, text=)
{
"declared": [
"p7"
],
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 101,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "batch_attack",
"next_action_message": "Play instants and activated abilities"
}gameGPT5 Teach attacks Opus Folksy with 1 creature
— Declare Blockers —
Opus Folksyllm
pass_priority(until=my_turn, board_cursor=6)
{
"combat_phase": "blockers",
"game_seq": 107,
"action_type": "GAME_SELECT",
"stop_reason": "combat",
"response_type": "select",
"combat": [
{
"blocked": false,
"defending": "Opus Folksy",
"attackers": [
{
"name": "Ornery Goblin",
"id": "p7",
"power": "2",
"toughness": "1"
}
]
}
],
"message": "Select blockers",
"action_pending": true,
"context": "T3 Combat/Declare Blockers (GPT5 Teach)",
"recent_chat": [
"GPT5 Teach: Alright, time to get on the board. Curious what you’re brewing over there!"
],
"respond_with": "blockers=[\"pN:pM\",...] (blocker:attacker) or answer=true (confirm) or answer=false (skip)",
"board_cursor": 7,
"choices": [
{
"name": "Spark Reaper",
"index": 0,
"choice_type": "blocker",
"id": "p13",
"power": "2",
"toughness": "3"
}
],
"board": [
{
"hand_size": 5,
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
}
],
"name": "Opus Folksy",
"library_size": 31,
"life": 20,
"hand": [
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
]
},
{
"hand_size": 6,
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29",
"power": "1",
"toughness": "1",
"summoning_sick": true
},
{
"tapped": false,
"name": "Goblin Token",
"id": "p32",
"power": "1",
"toughness": "1",
"summoning_sick": true,
"token": true
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
}
],
"name": "GPT5 Teach",
"library_size": 30,
"life": 20
}
],
"incoming_attackers": [
{
"name": "Ornery Goblin",
"id": "p7",
"power": "2",
"toughness": "1"
}
]
}thinkingOpus Folksy
Opponent is attacking with Ornery Goblin (2/1). My Spark Reaper is 2/3 but has summoning sickness... wait, it can still block! The Ornery Goblin deals 1 extra damage when blocked, so my Reaper would take 2+1=3 damage total and die, while I deal 2 damage to the Goblin killing it. Hmm, let me think...
Actually, Ornery Goblin says "deals 1 damage to that creature" when it blocks or becomes blocked. So if I block: my Spark Reaper takes 2 (combat) + 1 (trigger) = 3 damage and dies (it has 3 toughness, so exactly lethal). The Ornery Goblin takes 2 damage and dies. It's a trade.
If I don't block, I take 2 damage.
My Spark Reaper is more valuable than their 2/1 Ornery Goblin — it's a 2/3 body with a card draw ability. Better to take 2 damage and keep the Reaper.
mcpNo blocksraw
choose_action(answer=false)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 107,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play instants and activated abilities"
}Opus Folksyllm
choose_action(answer=false)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 111,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play instants and activated abilities"
}gameOpus Folksy loses 2 life at combat from Ornery Goblin
— Combat Damage —
Opus Folksyllm
choose_action(answer=false)
{
"game_seq": 115,
"success": true,
"action_taken": "passed_priority"
}— Postcombat Main —
GPT5 Teachllm
pass_priority(until=postcombat_main, board_cursor=8)
{
"game_seq": 116,
"action_type": "GAME_SELECT",
"stop_reason": "reached_step",
"response_type": "select",
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"context": "T3 Postcombat Main/Postcombat Main (GPT5 Teach) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 9,
"choices": [
{
"name": "Mountain",
"index": 0,
"action": "land",
"id": "p5"
},
{
"name": "Snow-Covered Island",
"index": 1,
"action": "land",
"id": "p9"
}
],
"board": [
{
"hand_size": 6,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29",
"power": "1",
"toughness": "1",
"summoning_sick": true
},
{
"tapped": false,
"name": "Goblin Token",
"id": "p32",
"power": "1",
"toughness": "1",
"summoning_sick": true,
"token": true
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
}
],
"name": "GPT5 Teach",
"library_size": 30,
"life": 20,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"power": "2",
"id": "p25",
"toughness": "1"
},
{
"mana_cost": "{2}{U}",
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p5",
"playable": true
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
},
{
"name": "Snow-Covered Island",
"is_land": true,
"rules": [
"{T}: Add {U}."
],
"id": "p9",
"playable": true
}
]
},
{
"hand_size": 5,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
}
],
"name": "Opus Folksy",
"library_size": 31,
"life": 18
}
],
"current_step": "Postcombat Main"
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p9, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 116,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_1",
"warning": "Both id and index provided; used id=p9, ignored index=0",
"next_action_message": "Play spells and abilities"
}gameGPT5 Teach puts Snow-Covered Island from hand onto the Battlefield
— Opus Folksy's Turn 4 —
Opus Folksyllm
pass_priority(until=my_turn, board_cursor=7)
{
"game_seq": 121,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 3,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"has_playable_cards": true,
"context": "T4 Precombat Main/Precombat Main (Opus Folksy) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 8,
"choices": [
{
"name": "Forest",
"index": 0,
"action": "land",
"id": "p11"
},
{
"name": "Forest",
"index": 1,
"action": "land",
"id": "p12"
},
{
"name": "Spark Reaper",
"index": 2,
"action": "activate",
"playable_abilities": [
"{3}, Sacrifice a creature or planeswalker: You ga..."
],
"id": "p13"
},
{
"name": "Swamp",
"index": 3,
"action": "land",
"id": "p16"
},
{
"name": "Swamp",
"index": 4,
"action": "land",
"id": "p24"
},
{
"name": "Swamp",
"index": 5,
"action": "land",
"id": "p27"
}
],
"board": [
{
"hand_size": 6,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
}
],
"name": "Opus Folksy",
"library_size": 30,
"life": 18,
"hand": [
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p11",
"playable": true
},
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p12",
"playable": true
},
{
"mana_cost": "{7}",
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"power": "5",
"id": "p33",
"toughness": "7"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16",
"playable": true
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p24",
"playable": true
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p27",
"playable": true
}
]
},
{
"hand_size": 5,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29",
"power": "1",
"toughness": "1",
"summoning_sick": true
},
{
"tapped": false,
"name": "Goblin Token",
"id": "p32",
"power": "1",
"toughness": "1",
"summoning_sick": true,
"token": true
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 30,
"life": 20
}
]
}thinkingOpus Folksy
Turn 4 — I drew Roving Keep (7 mana, 5/7 defender). That's expensive but could be a big finisher eventually. For now, I need to play a land and start attacking with Spark Reaper. Let me play a Forest for more mana options.
mcpPlay Forestraw
choose_action(id=p11)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 121,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"next_action_message": "Play spells and abilities"
}thinkingOpus Folksy
Nothing else to cast — pass to combat.
llmchoose_action(answer=false)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 125,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Select attackers"
}gameOpus Folksy puts Forest from hand onto the Battlefield
thinkingOpus Folksy
Now let me declare Spark Reaper as an attacker. The opponent has Goblin Instigator (1/1, sick), Goblin Token (1/1, sick), and Ornery Goblin (2/1, tapped). All their creatures are either sick or tapped, so they can't block!
llmchoose_action(attackers=["p13"])
{
"declared": [
"p13"
],
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 127,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "batch_attack",
"next_action_message": "Play instants and activated abilities"
}— Declare Attackers —
gameOpus Folksy attacks GPT5 Teach with 1 creature
— Declare Blockers —
GPT5 Teachllm
pass_priority(until=end_of_turn, board_cursor=9)
{
"combat_phase": "blockers",
"game_seq": 133,
"action_type": "GAME_SELECT",
"stop_reason": "combat",
"response_type": "select",
"untapped_lands": 1,
"combat": [
{
"blocked": false,
"defending": "GPT5 Teach",
"attackers": [
{
"name": "Spark Reaper",
"id": "p13",
"power": "2",
"toughness": "3"
}
]
}
],
"message": "Select blockers",
"action_pending": true,
"context": "T4 Combat/Declare Blockers (Opus Folksy)",
"respond_with": "blockers=[\"pN:pM\",...] (blocker:attacker) or answer=true (confirm) or answer=false (skip)",
"board_cursor": 10,
"choices": [
{
"name": "Goblin Instigator",
"index": 0,
"choice_type": "blocker",
"id": "p29",
"power": "1",
"toughness": "1"
},
{
"name": "Goblin Token",
"index": 1,
"choice_type": "blocker",
"id": "p32",
"power": "1",
"toughness": "1"
}
],
"board": [
{
"hand_size": 5,
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29",
"power": "1",
"toughness": "1",
"summoning_sick": true
},
{
"tapped": false,
"name": "Goblin Token",
"id": "p32",
"power": "1",
"toughness": "1",
"summoning_sick": true,
"token": true
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 30,
"life": 20,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"power": "2",
"id": "p25",
"toughness": "1"
},
{
"mana_cost": "{2}{U}",
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 5,
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
}
],
"name": "Opus Folksy",
"library_size": 30,
"life": 18
}
],
"incoming_attackers": [
{
"name": "Spark Reaper",
"id": "p13",
"power": "2",
"toughness": "3"
}
]
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 133,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"next_action_message": "Select blockers"
}GPT5 Teachllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 134,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"next_action_message": "Select blockers"
}questionable
Blocking Spark Reaper (2/3) with Goblin Instigator (1/1) at 20 life trades a Goblin body for just 2 damage prevention wi…
Blocking Spark Reaper (2/3) with Goblin Instigator (1/1) at 20 life trades a Goblin body for just 2 damage prevention without killing the attacker. With Muxus in hand, every Goblin on board adds +1/+1 to Muxus when it attacks. Losing a Goblin unnecessarily reduces Muxus's potential impact.
Analysis
Action taken: Blocked Spark Reaper with Goblin Instigator, losing it without killing the attacker to save 2 damage at 20 life
Better line: Don't block - take 2 damage at 20 life to preserve the Goblin body for Muxus. If blocking is desired, the Goblin Token is marginally better to sacrifice since it's a token rather than a real card.
GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=true, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=["p29:p31"], id=, text=)
{
"declared": [],
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 135,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "batch_block",
"failed": [
{
"reason": "not a valid blocker",
"id": "p29"
}
],
"next_action_message": "Play instants and activated abilities"
}gameAttacker: Spark Reaper (2/3) blocked by Goblin Instigator (1/1) Goblin Token (1/1)
— Combat Damage —
Opus Folksyllm
pass_priority(until=postcombat_main, board_cursor=8)
{
"game_seq": 140,
"action_type": "GAME_GET_MULTI_AMOUNT",
"stop_reason": "non_priority_action",
"response_type": "multi_amount",
"untapped_lands": 4,
"combat": [
{
"blocked": true,
"defending": "GPT5 Teach",
"attackers": [
{
"name": "Spark Reaper",
"id": "p13",
"power": "2",
"toughness": "3"
}
],
"blockers": [
{
"name": "Goblin Instigator",
"id": "p29",
"power": "1",
"toughness": "1"
},
{
"name": "Goblin Token",
"id": "p32",
"power": "1",
"toughness": "1"
}
]
}
],
"total_min": 2,
"message": "",
"action_pending": true,
"total_max": 2,
"context": "T4 Combat/Combat Damage (Opus Folksy)",
"respond_with": "amounts=[N, N, ...] (one per item)",
"board_cursor": 9,
"items": [
{
"default": 1,
"min": 0,
"max": 2,
"description": "<font color='#FF6347' object_id='8e8a223d-e2ec-4b05-aa83-4cfefa7c6883'>Goblin Instigator</font> [8e8], P/T: 1/1"
},
{
"default": 1,
"min": 0,
"max": 2,
"description": "<font color='#FF6347' object_id='0947c2f0-0fb8-4157-8a8b-2211a383921c'>Goblin Token</font> [094], P/T: 1/1"
}
],
"board": [
{
"hand_size": 5,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
}
],
"name": "Opus Folksy",
"library_size": 30,
"life": 18,
"hand": [
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"mana_cost": "{7}",
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"power": "5",
"id": "p33",
"toughness": "7"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
]
},
{
"hand_size": 5,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29",
"power": "1",
"toughness": "1",
"summoning_sick": true
},
{
"tapped": false,
"name": "Goblin Token",
"id": "p32",
"power": "1",
"toughness": "1",
"summoning_sick": true,
"token": true
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 30,
"life": 20
}
]
}thinkingOpus Folksy
Hmm, Spark Reaper is blocked by both Goblin Instigator and Goblin Token! I need to assign 2 damage total across them. Each is a 1/1, so I need at least 1 damage to kill each. Let me assign 1 to each to kill both.
mcpPassraw
choose_action(amounts=[1,1])
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 140,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "multi_amount",
"next_action_message": "Play instants and activated abilities"
}thinkingOpus Folksy
Nice, killed both of their 1/1s! Let me pass through the rest.
llmchoose_action(answer=false)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 148,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play spells and abilities"
}gameGoblin Instigator deals 1 damage to Spark Reaper
gameGoblin Token deals 1 damage to Spark Reaper
gameSpark Reaper deals 1 damage to Goblin Instigator
gameSpark Reaper deals 1 damage to Goblin Token
gameGoblin Instigator died
gameGoblin Token died
thinkingOpus Folksy
Now in postcombat main. Let me check what I can do.
— Postcombat Main —
thinkingOpus Folksy
I could activate Spark Reaper to sacrifice itself and draw a card, but that seems bad — I'd lose my only creature. Better to keep it on the board. Let me pass.
Opus FolksymcpPass
raw
choose_action(answer=false)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 150,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play instants and activated abilities"
}GPT5 Teachllm
pass_priority(until=postcombat_main, board_cursor=10)
{
"game_seq": 151,
"action_type": "GAME_SELECT",
"context": "T4 Postcombat Main/Postcombat Main (Opus Folksy)",
"stop_reason": "reached_step",
"response_type": "boolean",
"untapped_lands": 1,
"respond_with": "answer=true (confirm) or answer=false (pass)",
"message": "Play instants and activated abilities",
"board_cursor": 11,
"board": [
{
"hand_size": 5,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
}
],
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 30,
"life": 20,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"power": "2",
"id": "p25",
"toughness": "1"
},
{
"mana_cost": "{2}{U}",
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 5,
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
}
],
"name": "Opus Folksy",
"library_size": 30,
"life": 18
}
],
"action_pending": true,
"current_step": "Postcombat Main"
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 151,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play spells and abilities"
}— GPT5 Teach's Turn 4 —
chatOpus Folksy: Well, you know what they say — two birds, one stone! My Reaper took care of both those little goblins. Can't make an omelette without breaking a few eggs, I reckon.
Opus Folksyllm
choose_action(answer=false)
{
"game_seq": 153,
"success": true,
"action_taken": "passed_priority"
}thinkingOpus Folksy
Good turn — took out both their 1/1 tokens. Now let me wait for my next turn.
mcpsend_chat_messageraw
send_chat_message(message=Well, you know what they say — two birds...)
{
"success": true
}— Declare Attackers —
GPT5 Teachllm
pass_priority(until=my_turn, board_cursor=11)
{
"combat_phase": "attackers",
"game_seq": 154,
"action_type": "GAME_SELECT",
"stop_reason": "combat",
"response_type": "select",
"untapped_lands": 3,
"message": "Select attackers",
"action_pending": true,
"context": "T4 Combat/Declare Attackers (GPT5 Teach)",
"respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
"board_cursor": 12,
"choices": [
{
"name": "Ornery Goblin",
"index": 0,
"choice_type": "attacker",
"id": "p7",
"power": "2",
"toughness": "1"
},
{
"name": "All attack",
"index": 1,
"choice_type": "special",
"id": "all"
}
],
"board": [
{
"hand_size": 6,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 29,
"life": 20,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"power": "2",
"id": "p25",
"toughness": "1"
},
{
"mana_cost": "{2}{U}",
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 5,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
}
],
"name": "Opus Folksy",
"library_size": 30,
"life": 18
}
]
}GPT5 TeachmcpAttack with Ornery Goblin 2/1
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=["p7"], blockers=[], id=, text=)
{
"declared": [
"p7"
],
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 154,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "batch_attack",
"next_action_message": "Play instants and activated abilities"
}GPT5 Teachllm
pass_priority(until=postcombat_main, board_cursor=12)
{
"game_seq": 169,
"action_type": "GAME_SELECT",
"stop_reason": "reached_step",
"response_type": "select",
"untapped_lands": 3,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"context": "T4 Postcombat Main/Postcombat Main (GPT5 Teach) YOUR_MAIN",
"recent_chat": [
"Opus Folksy: Well, you know what they say — two birds, one stone! My Reaper took care of both those little goblins. Can't make an omelette without breaking a few eggs, I reckon."
],
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 13,
"choices": [
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"index": 0,
"action": "cast",
"id": "p25",
"power": "2",
"toughness": "1"
},
{
"mana_cost": "{2}{U}",
"name": "Icebind Pillar",
"index": 1,
"action": "cast",
"id": "p3"
},
{
"name": "Mountain",
"index": 2,
"action": "land",
"id": "p5"
}
],
"board": [
{
"hand_size": 6,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 29,
"life": 20,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"power": "2",
"id": "p25",
"toughness": "1",
"playable": true
},
{
"mana_cost": "{2}{U}",
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3",
"playable": true
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p5",
"playable": true
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 5,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
}
],
"name": "Opus Folksy",
"library_size": 30,
"life": 16
}
],
"current_step": "Postcombat Main"
}gameGPT5 Teach attacks Opus Folksy with 1 creature
— Declare Blockers —
gameOpus Folksy loses 2 life at combat from Ornery Goblin
— Combat Damage —
— Postcombat Main —
GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p3, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 169,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_1",
"warning": "Both id and index provided; used id=p3, ignored index=0",
"next_action_message": "Play instants and activated abilities"
}GPT5 Teachllm
pass_priority(until=end_of_turn, board_cursor=13)
{
"game_seq": 178,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"has_playable_cards": true,
"context": "T4 Postcombat Main/Postcombat Main (GPT5 Teach) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 14,
"choices": [
{
"name": "Mountain",
"index": 0,
"action": "land",
"id": "p5"
}
],
"board": [
{
"hand_size": 5,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 29,
"life": 20,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"power": "2",
"id": "p25",
"toughness": "1"
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p5",
"playable": true
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 5,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
}
],
"name": "Opus Folksy",
"library_size": 30,
"life": 16
}
]
}minor blunder
Cast Goblin Shortcutter in postcombat main phase, completely wasting its 'target creature can't block this turn' ETB tri…
Cast Goblin Shortcutter in postcombat main phase, completely wasting its 'target creature can't block this turn' ETB trigger since combat already happened. Additionally, didn't play the Mountain land drop before casting to maximize available mana. Icebind Pillar would have been a stronger play here — it's a repeatable tap effect that synergizes with the two Snow-Covered Islands already in play and provides ongoing board control.
Analysis
Action taken: Cast Goblin Shortcutter in postcombat main, wasting its ETB, without playing Mountain first.
Better line: Play Mountain first, then cast Icebind Pillar ({2}{U}) to deploy a powerful repeatable tap engine that works with snow lands already in play.
gameGPT5 Teach casts Icebind Pillar from hand
gameGPT5 Teach puts Icebind Pillar from stack onto the Battlefield
GPT5 Teachllm
pass_priority(until=postcombat_main, board_cursor=14)
{
"game_seq": 178,
"action_type": "GAME_SELECT",
"stop_reason": "reached_step",
"response_type": "select",
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"board_unchanged": true,
"context": "T4 Postcombat Main/Postcombat Main (GPT5 Teach) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 14,
"choices": [
{
"name": "Mountain",
"index": 0,
"action": "land",
"id": "p5"
}
],
"current_step": "Postcombat Main"
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p5, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 178,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"warning": "Both id and index provided; used id=p5, ignored index=0",
"next_action_message": "Play spells and abilities"
}moderate blunder
Failed to play Mountain from hand during postcombat main phase.
Failed to play Mountain from hand during postcombat main phase. This was a free land drop with no downside. Playing it would bring them to 6 lands, enabling Muxus, Goblin Grandee (4RR) next turn. Without it, Muxus is delayed by at least one turn.
Analysis
Action taken: Timed out and passed without playing the Mountain, missing the land drop entirely.
Better line: Play Mountain to reach 6 lands, enabling Muxus next turn which could be game-winning with multiple goblins in the deck.
gameGPT5 Teach puts Mountain from hand onto the Battlefield
— Opus Folksy's Turn 5 —
Opus Folksyllm
pass_priority(until=my_turn, board_cursor=10)
{
"game_seq": 182,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 4,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"has_playable_cards": true,
"context": "T5 Precombat Main/Precombat Main (Opus Folksy) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 11,
"choices": [
{
"name": "Forest",
"index": 0,
"action": "land",
"id": "p12"
},
{
"mana_cost": "{1}{G}{G}",
"name": "Grave Bramble",
"index": 1,
"action": "cast",
"id": "p36",
"power": "3",
"toughness": "4"
},
{
"name": "Spark Reaper",
"index": 2,
"action": "activate",
"playable_abilities": [
"{3}, Sacrifice a creature or planeswalker: You ga..."
],
"id": "p13"
},
{
"name": "Swamp",
"index": 3,
"action": "land",
"id": "p16"
},
{
"name": "Swamp",
"index": 4,
"action": "land",
"id": "p24"
},
{
"name": "Swamp",
"index": 5,
"action": "land",
"id": "p27"
}
],
"board": [
{
"hand_size": 6,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
}
],
"name": "Opus Folksy",
"library_size": 29,
"life": 16,
"hand": [
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p12",
"playable": true
},
{
"mana_cost": "{1}{G}{G}",
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"power": "3",
"id": "p36",
"toughness": "4",
"playable": true
},
{
"mana_cost": "{7}",
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"power": "5",
"id": "p33",
"toughness": "7"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16",
"playable": true
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p24",
"playable": true
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p27",
"playable": true
}
]
},
{
"hand_size": 4,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 29,
"life": 20
}
]
}thinkingOpus Folksy
Turn 5. I'm at 16 life (took 2 from Ornery Goblin twice, and they double-blocked my Reaper). The opponent played Icebind Pillar — that can tap down my creatures with snow mana. They also have a second Mountain now.
I drew Grave Bramble — a 3/4 defender with protection from Zombies for 1GG. That's a solid blocker! I have 2 Forests and 3 Swamps, but I need to play another land first. Let me play a Swamp (I have plenty), then cast Grave Bramble with my 2 Forests + 1 Swamp for the generic.
Wait — Grave Bramble costs {1}{G}{G}. I have 2 Forests that can produce G, and I need 1 generic. If I play a Swamp, I'll have 2 Forests + 3 Swamps = 5 lands. I can tap both Forests for GG and one Swamp for the generic. Perfect.
mcpPlay Swampraw
choose_action(id=p27)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 182,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_5",
"next_action_message": "Play spells and abilities"
}thinkingOpus Folksy
Now cast Grave Bramble.
llmchoose_action(id=p36)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 186,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"next_action_message": "Play instants and activated abilities"
}minor blunder
Playing Swamp instead of Forest when holding 3 Swamps and only 1 Forest in hand.
Playing Swamp instead of Forest when holding 3 Swamps and only 1 Forest in hand. Playing Forest first preserves more mana flexibility for future turns while still enabling Grave Bramble (1GG) this turn. With the Forest play, future Swamp drops give better color balance.
Analysis
Action taken: Played Swamp, going to 2G/3B
Better line: Play Forest to go to 3G/2B, preserving flexibility since hand contains 3 more Swamps and only needs future black from existing Swamps on board
gameOpus Folksy puts Swamp from hand onto the Battlefield
gameOpus Folksy casts Grave Bramble from hand
GPT5 Teachllm
pass_priority(until=end_of_turn, board_cursor=14)
{
"stack": [
{
"name": "Grave Bramble"
}
],
"game_seq": 193,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 1,
"message": "Play instants and activated abilities",
"action_pending": true,
"has_playable_cards": true,
"context": "T5 Precombat Main/Precombat Main (Opus Folksy)",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 15,
"choices": [
{
"name": "Icebind Pillar",
"index": 0,
"action": "activate",
"playable_abilities": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
}
],
"board": [
{
"hand_size": 4,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
}
],
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 29,
"life": 20,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"power": "2",
"id": "p25",
"toughness": "1"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 4,
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 29,
"mana_pool": {
"B": 1
},
"life": 16
}
]
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p3, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_TARGET",
"game_seq": 193,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"warning": "Both id and index provided; used id=p3, ignored index=0",
"next_action_message": "Select an artifact or creature"
}chatGPT5 Teach: Gonna ice that Reaper so it sits this one out. Trying to keep combat honest over here.
GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p13, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 194,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_target_2",
"warning": "Both id and index provided; used id=p13, ignored index=0",
"next_action_message": "Play instants and activated abilities"
}GPT5 Teachmcpsend_chat_message
raw
send_chat_message(message=Gonna ice that Reaper so it sits this on...)
{
"success": true
}GPT5 Teachllm
pass_priority(until=stack_resolved, board_cursor=15)
{
"game_seq": 210,
"action_type": "GAME_SELECT",
"context": "T5 Precombat Main/Precombat Main (Opus Folksy)",
"stop_reason": "stack_resolved",
"response_type": "boolean",
"untapped_lands": 1,
"recent_chat": [
"[System] Spell cancelled — not enough mana to complete payment."
],
"respond_with": "answer=true (confirm) or answer=false (pass)",
"message": "Play instants and activated abilities",
"board_cursor": 16,
"board": [
{
"hand_size": 4,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
}
],
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 29,
"life": 20,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"power": "2",
"id": "p25",
"toughness": "1"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 4,
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": false,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 29,
"mana_pool": {
"B": 1
},
"life": 16
}
],
"action_pending": true
}moderate blunder
GPT5 Teach activated Icebind Pillar's tap ability but targeted their own already-tapped Icebind Pillar instead of the op…
GPT5 Teach activated Icebind Pillar's tap ability but targeted their own already-tapped Icebind Pillar instead of the opponent's Spark Reaper. This wastes the activation entirely, accomplishing nothing — tapping an already-tapped permanent they own has zero value.
Analysis
Action taken: Targeted their own Icebind Pillar (already tapped) with Icebind Pillar's tap ability
Better line: Target Spark Reaper to tap down the opponent's 2/3 creature, preventing it from blocking or using its sacrifice ability
gameOpus Folksy puts Grave Bramble from stack onto the Battlefield
GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 210,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play instants and activated abilities"
}— Declare Attackers —
Opus Folksyllm
pass_priority(until=declare_attackers, board_cursor=11)
{
"combat_phase": "attackers",
"game_seq": 211,
"action_type": "GAME_SELECT",
"stop_reason": "combat",
"response_type": "select",
"untapped_lands": 1,
"message": "Select attackers",
"action_pending": true,
"context": "T5 Combat/Declare Attackers (Opus Folksy)",
"recent_chat": [
"GPT5 Teach: Gonna ice that Reaper so it sits this one out. Trying to keep combat honest over here."
],
"respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
"board_cursor": 13,
"choices": [
{
"name": "Spark Reaper",
"index": 0,
"choice_type": "attacker",
"id": "p13",
"power": "2",
"toughness": "3"
},
{
"name": "All attack",
"index": 1,
"choice_type": "special",
"id": "all"
}
],
"board": [
{
"hand_size": 4,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": false,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 29,
"life": 16,
"hand": [
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"mana_cost": "{7}",
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"power": "5",
"id": "p33",
"toughness": "7"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p24"
}
]
},
{
"hand_size": 4,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 29,
"life": 20
}
]
}thinkingOpus Folksy
Spark Reaper can attack. Opponent has Ornery Goblin tapped, so only Icebind Pillar could potentially tap my creature (but they'd need snow mana and it's their turn to have priority). Let me attack with Spark Reaper — they have no untapped blockers!
mcpAttack with Spark Reaper 2/3raw
choose_action(attackers=["p13"])
{
"declared": [
"p13"
],
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 211,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "batch_attack",
"next_action_message": "Play instants and activated abilities"
}gameOpus Folksy attacks GPT5 Teach with 1 creature
— Declare Blockers —
gameGPT5 Teach loses 2 life at combat from Spark Reaper
— Combat Damage —
— Postcombat Main —
Opus Folksyllm
pass_priority(until=postcombat_main, board_cursor=13)
{
"game_seq": 225,
"action_type": "GAME_SELECT",
"stop_reason": "reached_step",
"response_type": "boolean",
"untapped_lands": 1,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 1,
"context": "T5 Postcombat Main/Postcombat Main (Opus Folksy) YOUR_MAIN",
"respond_with": "answer=true (confirm) or answer=false (pass)",
"board_cursor": 14,
"board": [
{
"hand_size": 4,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 29,
"life": 16,
"hand": [
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"mana_cost": "{7}",
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"power": "5",
"id": "p33",
"toughness": "7"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p24"
}
]
},
{
"hand_size": 4,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 29,
"life": 18
}
],
"current_step": "Postcombat Main"
}thinkingOpus Folksy
Good — dealt 2 damage, opponent now at 18. Nothing to do postcombat with only 1 untapped land.
Opus FolksymcpPass
raw
choose_action(answer=false)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 225,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play instants and activated abilities"
}— GPT5 Teach's Turn 5 —
GPT5 Teachllm
pass_priority(until=begin_combat, board_cursor=16)
{
"game_seq": 227,
"action_type": "GAME_SELECT",
"stop_reason": "step_not_reached",
"action_pending": true,
"current_step": "Precombat Main"
}Opus Folksyllm
choose_action(answer=false)
{
"game_seq": 228,
"success": true,
"action_taken": "passed_priority"
}— Declare Attackers —
GPT5 Teachllm
pass_priority(until=declare_attackers, board_cursor=16)
{
"combat_phase": "attackers",
"game_seq": 229,
"action_type": "GAME_SELECT",
"stop_reason": "combat",
"response_type": "select",
"untapped_lands": 4,
"message": "Select attackers",
"action_pending": true,
"context": "T5 Combat/Declare Attackers (GPT5 Teach)",
"respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
"board_cursor": 17,
"choices": [
{
"name": "Ornery Goblin",
"index": 0,
"choice_type": "attacker",
"id": "p7",
"power": "2",
"toughness": "1"
},
{
"name": "All attack",
"index": 1,
"choice_type": "special",
"id": "all"
}
],
"board": [
{
"hand_size": 5,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 28,
"life": 18,
"hand": [
{
"mana_cost": "{1}{U}",
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"power": "1",
"id": "p39",
"toughness": "3"
},
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"power": "2",
"id": "p25",
"toughness": "1"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 4,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 29,
"life": 16
}
]
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 229,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"next_action_message": "Select attackers"
}GPT5 Teachllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 230,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play instants and activated abilities"
}gameGPT5 Teach attacks Opus Folksy with 1 creature
— Declare Blockers —
chatOpus Folksy: Well now, that goblin's runnin' right into a brick wall. As they say, look before you leap! My Bramble's happy to welcome him.
Opus Folksyllm
pass_priority(until=my_turn, board_cursor=14)
{
"combat_phase": "blockers",
"game_seq": 236,
"action_type": "GAME_SELECT",
"stop_reason": "combat",
"response_type": "select",
"untapped_lands": 1,
"combat": [
{
"blocked": false,
"defending": "Opus Folksy",
"attackers": [
{
"name": "Ornery Goblin",
"id": "p7",
"power": "2",
"toughness": "1"
}
]
}
],
"message": "Select blockers",
"action_pending": true,
"context": "T5 Combat/Declare Blockers (GPT5 Teach)",
"respond_with": "blockers=[\"pN:pM\",...] (blocker:attacker) or answer=true (confirm) or answer=false (skip)",
"board_cursor": 15,
"choices": [
{
"name": "Grave Bramble",
"index": 0,
"choice_type": "blocker",
"id": "p36",
"power": "3",
"toughness": "4"
}
],
"board": [
{
"hand_size": 4,
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 29,
"life": 16,
"hand": [
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"mana_cost": "{7}",
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"power": "5",
"id": "p33",
"toughness": "7"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p24"
}
]
},
{
"hand_size": 5,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
}
],
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 28,
"life": 18
}
],
"incoming_attackers": [
{
"name": "Ornery Goblin",
"id": "p7",
"power": "2",
"toughness": "1"
}
]
}thinkingOpus Folksy
Ornery Goblin (2/1) is attacking me. My Grave Bramble (3/4 defender, summoning sickness doesn't matter for blocking) can block it. Ornery Goblin deals 1 extra damage to blockers, so my Bramble takes 2+1=3 damage. Bramble has 4 toughness, so it survives! And deals 3 damage back, killing the Goblin. That's a great trade — I kill their creature for free.
mcpGrave Bramble blocks p10raw
choose_action(blockers=["p36:p10"])
{
"declared": [
{
"id": "p36",
"blocks": "p10"
}
],
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 236,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "batch_block",
"next_action_message": "Play instants and activated abilities"
}Opus Folksymcpsend_chat_message
raw
send_chat_message(message=Well now, that goblin's runnin' right in...)
{
"success": true
}gameAttacker: Ornery Goblin (2/1) blocked by Grave Bramble (3/4)
gameGPT5 Teach - Ability triggers: Ornery Goblin - Whenever Ornery Goblin blocks or becomes blocked by a creature, Ornery Goblin deals 1 damage to that creature.
gameOrnery Goblin deals 1 damage to Grave Bramble
gameGrave Bramble deals 3 damage to Ornery Goblin
gameOrnery Goblin deals 2 damage to Grave Bramble
gameOrnery Goblin died
— Combat Damage —
— Postcombat Main —
GPT5 Teachllm
pass_priority(until=postcombat_main, board_cursor=17)
{
"game_seq": 252,
"action_type": "GAME_SELECT",
"stop_reason": "reached_step",
"response_type": "select",
"untapped_lands": 4,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"context": "T5 Postcombat Main/Postcombat Main (GPT5 Teach) YOUR_MAIN",
"recent_chat": [
"Opus Folksy: Well now, that goblin's runnin' right into a brick wall. As they say, look before you leap! My Bramble's happy to welcome him."
],
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 19,
"choices": [
{
"mana_cost": "{1}{U}",
"name": "Avalanche Caller",
"index": 0,
"action": "cast",
"id": "p39",
"power": "1",
"toughness": "3"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"index": 1,
"action": "cast",
"id": "p34",
"power": "3",
"toughness": "3"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"index": 2,
"action": "cast",
"id": "p25",
"power": "2",
"toughness": "1"
},
{
"name": "Icebind Pillar",
"index": 3,
"action": "activate",
"playable_abilities": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
}
],
"board": [
{
"hand_size": 5,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 28,
"life": 18,
"hand": [
{
"mana_cost": "{1}{U}",
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"power": "1",
"id": "p39",
"toughness": "3",
"playable": true
},
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3",
"playable": true
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"power": "2",
"id": "p25",
"toughness": "1",
"playable": true
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 4,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 29,
"life": 16
}
],
"current_step": "Postcombat Main"
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p39, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 252,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"warning": "Both id and index provided; used id=p39, ignored index=0",
"next_action_message": "Play instants and activated abilities"
}GPT5 Teachllm
pass_priority(until=end_of_turn, board_cursor=19)
{
"game_seq": 260,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 2,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"has_playable_cards": true,
"context": "T5 Postcombat Main/Postcombat Main (GPT5 Teach) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 20,
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"action": "activate",
"playable_abilities": [
"{2}: Target snow land you control becomes a 4/4 E..."
],
"id": "p39"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"index": 1,
"action": "cast",
"id": "p25",
"power": "2",
"toughness": "1"
},
{
"name": "Icebind Pillar",
"index": 2,
"action": "activate",
"playable_abilities": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
}
],
"board": [
{
"hand_size": 4,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 28,
"life": 18,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{1}{R}",
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"power": "2",
"id": "p25",
"toughness": "1",
"playable": true
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 4,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 29,
"life": 16
}
]
}gameGPT5 Teach casts Avalanche Caller from hand
gameGPT5 Teach puts Avalanche Caller from stack onto the Battlefield
GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p25, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 260,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_1",
"warning": "Both id and index provided; used id=p25, ignored index=0",
"next_action_message": "Play instants and activated abilities"
}GPT5 Teachllm
pass_priority(until=end_of_turn, board_cursor=20)
{
"stack": [
{
"name": "Ability"
}
],
"game_seq": 267,
"action_type": "GAME_TARGET",
"stop_reason": "non_priority_action",
"response_type": "index",
"can_cancel": false,
"message": "Select a creature",
"required": true,
"action_pending": true,
"land_drops_used": 0,
"context": "T5 Postcombat Main/Postcombat Main (GPT5 Teach) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N",
"board_cursor": 21,
"choices": [
{
"name": "Avalanche Caller",
"target_type": "permanent",
"index": 0,
"power": "1",
"id": "p39",
"toughness": "3"
},
{
"name": "Goblin Shortcutter",
"target_type": "permanent",
"index": 1,
"power": "2",
"id": "p25",
"toughness": "1"
},
{
"controller": "Opus Folksy",
"name": "Grave Bramble",
"target_type": "permanent",
"index": 2,
"power": "3",
"id": "p36",
"toughness": "4"
},
{
"tapped": true,
"controller": "Opus Folksy",
"name": "Spark Reaper",
"target_type": "permanent",
"index": 3,
"power": "2",
"id": "p13",
"toughness": "3"
}
],
"board": [
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": false,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": true
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 28,
"life": 18,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 4,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 29,
"life": 16
}
]
}minor blunder
Activated Avalanche Caller postcombat to make a snow land a temporary 4/4 until end of turn, when Goblin Shortcutter cou…
Activated Avalanche Caller postcombat to make a snow land a temporary 4/4 until end of turn, when Goblin Shortcutter could have been cast instead for a permanent 2/1 Goblin body. The temporary 4/4 provides marginal blocking value for one turn, while the Shortcutter would be a permanent board presence and a Goblin for Muxus synergy.
Analysis
Action taken: Activated Avalanche Caller to animate a snow land as a 4/4 until end of turn postcombat
Better line: Cast Goblin Shortcutter for {1}{R} to deploy a permanent 2/1 Goblin creature, building board presence and Muxus synergy
gameGPT5 Teach casts Goblin Shortcutter from hand
gameGPT5 Teach puts Goblin Shortcutter from stack onto the Battlefield
GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p13, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 267,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_target_3",
"warning": "Both id and index provided; used id=p13, ignored index=0",
"next_action_message": "Play instants and activated abilities"
}gameGPT5 Teach - Ability triggers: Goblin Shortcutter - When Goblin Shortcutter enters, target creature can't block this turn. - targeting Spark Reaper
— Opus Folksy's Turn 6 —
Opus Folksyllm
pass_priority(until=my_turn, board_cursor=15)
{
"game_seq": 273,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 5,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"has_playable_cards": true,
"context": "T6 Precombat Main/Precombat Main (Opus Folksy) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 16,
"choices": [
{
"name": "Forest",
"index": 0,
"action": "land",
"id": "p12"
},
{
"mana_cost": "{1}{B}",
"name": "Oversold Cemetery",
"index": 1,
"action": "cast",
"id": "p44"
},
{
"name": "Spark Reaper",
"index": 2,
"action": "activate",
"playable_abilities": [
"{3}, Sacrifice a creature or planeswalker: You ga..."
],
"id": "p13"
},
{
"name": "Swamp",
"index": 3,
"action": "land",
"id": "p16"
},
{
"name": "Swamp",
"index": 4,
"action": "land",
"id": "p24"
}
],
"board": [
{
"hand_size": 5,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 28,
"life": 16,
"hand": [
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p12",
"playable": true
},
{
"mana_cost": "{1}{B}",
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44",
"playable": true
},
{
"mana_cost": "{7}",
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"power": "5",
"id": "p33",
"toughness": "7"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16",
"playable": true
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p24",
"playable": true
}
]
},
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": false,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": true
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 28,
"life": 18
}
]
}thinkingOpus Folksy
Turn 6. Opponent played Avalanche Caller (1/3, can turn snow lands into 4/4 hexproof haste creatures) and Goblin Shortcutter (2/1, made a creature unable to block). Both are sick. They also have Icebind Pillar that can tap my stuff.
I drew Oversold Cemetery — {1}{B} enchantment that returns creatures from graveyard if I have 4+ creatures there. Not useful now since I have 0 creatures in my graveyard. But it's cheap to play now. Hmm, it's only 2 mana and doesn't do anything yet. I should probably play it since it costs almost nothing and could be relevant later.
Let me play a land first, then Oversold Cemetery, then attack.
mcpPlay Swampraw
choose_action(id=p24)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 273,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_4",
"next_action_message": "Play spells and abilities"
}thinkingOpus Folksy
Now cast Oversold Cemetery for {1}{B}.
llmchoose_action(id=p44)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 277,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"next_action_message": "Play instants and activated abilities"
}gameOpus Folksy puts Swamp from hand onto the Battlefield
thinkingOpus Folksy
Good, Oversold Cemetery resolves. Now let me pass to combat.
llmpass_priority(until=declare_attackers, board_cursor=16)
{
"combat_phase": "attackers",
"game_seq": 286,
"action_type": "GAME_SELECT",
"stop_reason": "combat",
"response_type": "select",
"untapped_lands": 4,
"message": "Select attackers",
"action_pending": true,
"context": "T6 Combat/Declare Attackers (Opus Folksy)",
"respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
"board_cursor": 18,
"choices": [
{
"name": "Spark Reaper",
"index": 0,
"choice_type": "attacker",
"id": "p13",
"power": "2",
"toughness": "3"
},
{
"name": "All attack",
"index": 1,
"choice_type": "special",
"id": "all"
}
],
"board": [
{
"hand_size": 3,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 28,
"life": 16,
"hand": [
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"mana_cost": "{7}",
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"power": "5",
"id": "p33",
"toughness": "7"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16"
}
]
},
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": false,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": true
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 28,
"life": 18
}
]
}gameOpus Folksy casts Oversold Cemetery from hand
gameOpus Folksy puts Oversold Cemetery from stack onto the Battlefield
— Declare Attackers —
thinkingOpus Folksy
Opponent's creatures are all sick and all lands tapped. Spark Reaper can swing in freely again for 2 damage.
mcpAttack with Spark Reaper 2/3raw
choose_action(attackers=["p13"])
{
"declared": [
"p13"
],
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 286,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "batch_attack",
"next_action_message": "Play instants and activated abilities"
}gameOpus Folksy attacks GPT5 Teach with 1 creature
— Declare Blockers —
GPT5 Teachllm
pass_priority(until=my_turn, board_cursor=21)
{
"combat_phase": "blockers",
"game_seq": 292,
"action_type": "GAME_SELECT",
"stop_reason": "combat",
"response_type": "select",
"combat": [
{
"blocked": false,
"defending": "GPT5 Teach",
"attackers": [
{
"name": "Spark Reaper",
"id": "p13",
"power": "2",
"toughness": "3"
}
]
}
],
"message": "Select blockers",
"action_pending": true,
"context": "T6 Combat/Declare Blockers (Opus Folksy)",
"respond_with": "blockers=[\"pN:pM\",...] (blocker:attacker) or answer=true (confirm) or answer=false (skip)",
"board_cursor": 22,
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"choice_type": "blocker",
"id": "p39",
"power": "1",
"toughness": "3"
},
{
"name": "Goblin Shortcutter",
"index": 1,
"choice_type": "blocker",
"id": "p25",
"power": "2",
"toughness": "1"
}
],
"board": [
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": false,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": true
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 28,
"life": 18,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 3,
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 28,
"life": 16
}
],
"incoming_attackers": [
{
"name": "Spark Reaper",
"id": "p13",
"power": "2",
"toughness": "3"
}
]
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=true, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=["p39:p13"], id=, text=)
{
"declared": [
{
"id": "p39",
"blocks": "p13"
}
],
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 292,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "batch_block",
"next_action_message": "Play instants and activated abilities"
}moderate blunder
Blocked Spark Reaper with Avalanche Caller (1/3) instead of Goblin Shortcutter (2/1).
Blocked Spark Reaper with Avalanche Caller (1/3) instead of Goblin Shortcutter (2/1). Avalanche Caller is a key card that turns snow lands into 4/4 hexproof haste attackers, making it far more valuable than the Goblin Shortcutter whose ETB has already been used. Additionally, Goblin Shortcutter would deal 2 damage to Spark Reaper (leaving it at 1 toughness) compared to Avalanche Caller's 1 damage.
Analysis
Action taken: Blocked Spark Reaper with Avalanche Caller, losing the snow-land activation engine
Better line: Block with Goblin Shortcutter instead — it's expendable (ETB already used, just a 2/1 body), deals more combat damage to Spark Reaper, and preserves the much more impactful Avalanche Caller
gameAttacker: Spark Reaper (2/3) blocked by Avalanche Caller (1/3)
Opus Folksyllm
pass_priority(until=end_of_turn, board_cursor=18)
{
"game_seq": 296,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 4,
"combat": [
{
"blocked": true,
"defending": "GPT5 Teach",
"attackers": [
{
"name": "Spark Reaper",
"id": "p13",
"power": "2",
"toughness": "3"
}
],
"blockers": [
{
"name": "Avalanche Caller",
"id": "p39",
"power": "1",
"toughness": "3"
}
]
}
],
"message": "Play instants and activated abilities",
"action_pending": true,
"has_playable_cards": true,
"context": "T6 Combat/Declare Blockers (Opus Folksy)",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 19,
"choices": [
{
"name": "Spark Reaper",
"index": 0,
"action": "activate",
"playable_abilities": [
"{3}, Sacrifice a creature or planeswalker: You ga..."
],
"id": "p13"
}
],
"board": [
{
"hand_size": 3,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 28,
"life": 16,
"hand": [
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"mana_cost": "{7}",
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"power": "5",
"id": "p33",
"toughness": "7"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16"
}
]
},
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": false,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": true
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 28,
"life": 18
}
]
}thinkingOpus Folksy
Wait — the opponent activated Icebind Pillar before attackers were declared? No, it says "Spark Reaper blocked by Avalanche Caller". Hmm wait, the Avalanche Caller was sick... Let me re-read. Oh, it says "blocked by Avalanche Caller -> GPT5 Teach". So they blocked my Spark Reaper with Avalanche Caller. But Avalanche Caller had summoning sickness...
Actually, summoning sickness doesn't prevent blocking! Only attacking and tapping. So they can block with Avalanche Caller.
Spark Reaper is 2/3 vs Avalanche Caller 1/3. My Reaper deals 2, killing the 1/3. Their Caller deals 1 to my Reaper, which survives at 2/2 (damaged). This is fine — I kill their creature and my Reaper lives.
I should just pass priority.
Opus FolksymcpPass
raw
choose_action(answer=false)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 296,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play instants and activated abilities"
}Opus Folksyllm
pass_priority(until=end_of_turn, board_cursor=19)
{
"game_seq": 303,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 4,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 1,
"has_playable_cards": true,
"board_unchanged": true,
"context": "T6 Postcombat Main/Postcombat Main (Opus Folksy) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 19,
"choices": [
{
"name": "Spark Reaper",
"index": 0,
"action": "activate",
"playable_abilities": [
"{3}, Sacrifice a creature or planeswalker: You ga..."
],
"id": "p13"
}
]
}gameAvalanche Caller deals 1 damage to Spark Reaper
gameSpark Reaper deals 2 damage to Avalanche Caller
— Combat Damage —
— Postcombat Main —
thinkingOpus Folksy
Hmm, Avalanche Caller is still alive? It must have blocked and survived. Looking at it again — my Spark Reaper (2/3) vs Avalanche Caller (1/3). My 2 power kills their 1/3 Caller. Their 1 power puts damage on my Reaper but doesn't kill it. So the Caller should be dead...
Wait, the board still shows Avalanche Caller. Maybe combat hasn't resolved yet? Let me just pass and let things resolve.
Opus FolksymcpPass
raw
choose_action(answer=false)
{
"game_seq": 303,
"success": true,
"action_taken": "passed_priority"
}thinkingOpus Folksy
Good. Now let me wait for the opponent's turn and my next turn.
GPT5 Teachllm
pass_priority(until=postcombat_main, board_cursor=22)
{
"game_seq": 304,
"action_type": "GAME_SELECT",
"board_unchanged": true,
"context": "T6 Postcombat Main/Postcombat Main (Opus Folksy)",
"stop_reason": "reached_step",
"response_type": "boolean",
"respond_with": "answer=true (confirm) or answer=false (pass)",
"message": "Play instants and activated abilities",
"board_cursor": 22,
"action_pending": true,
"current_step": "Postcombat Main"
}GPT5 Teachllm
pass_priority(until=my_turn, board_cursor=22)
{
"game_seq": 305,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 4,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"has_playable_cards": true,
"context": "T6 Precombat Main/Precombat Main (GPT5 Teach) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 23,
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"action": "activate",
"playable_abilities": [
"{2}: Target snow land you control becomes a 4/4 E..."
],
"id": "p39"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"index": 1,
"action": "cast",
"id": "p34",
"power": "3",
"toughness": "3"
},
{
"name": "Icebind Pillar",
"index": 2,
"action": "activate",
"playable_abilities": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"name": "Mountain",
"index": 3,
"action": "land",
"id": "p46"
}
],
"board": [
{
"hand_size": 4,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 27,
"life": 18,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3",
"playable": true
},
{
"name": "Mountain",
"is_land": true,
"rules": [
"{T}: Add {R}."
],
"id": "p46",
"playable": true
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 3,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 28,
"life": 16
}
]
}— GPT5 Teach's Turn 6 —
GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p46, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 305,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_3",
"warning": "Both id and index provided; used id=p46, ignored index=0",
"next_action_message": "Play spells and abilities"
}GPT5 Teachllm
pass_priority(until=precombat_main, board_cursor=23)
{
"game_seq": 309,
"action_type": "GAME_SELECT",
"stop_reason": "reached_step",
"response_type": "select",
"untapped_lands": 5,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 1,
"context": "T6 Precombat Main/Precombat Main (GPT5 Teach) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 24,
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"action": "activate",
"playable_abilities": [
"{2}: Target snow land you control becomes a 4/4 E..."
],
"id": "p39"
},
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"index": 1,
"action": "cast",
"id": "p23",
"power": "4",
"toughness": "4"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"index": 2,
"action": "cast",
"id": "p34",
"power": "3",
"toughness": "3"
},
{
"name": "Icebind Pillar",
"index": 3,
"action": "activate",
"playable_abilities": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
}
],
"board": [
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 27,
"life": 18,
"hand": [
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"power": "4",
"id": "p23",
"toughness": "4",
"playable": true
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3",
"playable": true
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 3,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 28,
"life": 16
}
],
"current_step": "Precombat Main"
}gameGPT5 Teach puts Mountain from hand onto the Battlefield
GPT5 Teachllm
pass_priority(until=precombat_main, board_cursor=24)
{
"game_seq": 309,
"action_type": "GAME_SELECT",
"stop_reason": "reached_step",
"response_type": "select",
"untapped_lands": 5,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 1,
"board_unchanged": true,
"context": "T6 Precombat Main/Precombat Main (GPT5 Teach) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 24,
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"action": "activate",
"playable_abilities": [
"{2}: Target snow land you control becomes a 4/4 E..."
],
"id": "p39"
},
{
"mana_cost": "{4}{U}",
"name": "Berg Strider",
"index": 1,
"action": "cast",
"id": "p23",
"power": "4",
"toughness": "4"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"index": 2,
"action": "cast",
"id": "p34",
"power": "3",
"toughness": "3"
},
{
"name": "Icebind Pillar",
"index": 3,
"action": "activate",
"playable_abilities": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
}
],
"current_step": "Precombat Main"
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p23, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 309,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_1",
"warning": "Both id and index provided; used id=p23, ignored index=0",
"next_action_message": "Play instants and activated abilities"
}GPT5 Teachllm
pass_priority(until=stack_resolved, board_cursor=24)
{
"stack": [
{
"name": "Ability"
}
],
"game_seq": 319,
"action_type": "GAME_TARGET",
"stop_reason": "non_priority_action",
"response_type": "index",
"can_cancel": false,
"message": "Select an artifact or creature an opponent controls",
"required": true,
"action_pending": true,
"land_drops_used": 1,
"context": "T6 Precombat Main/Precombat Main (GPT5 Teach) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N",
"board_cursor": 25,
"choices": [
{
"controller": "Opus Folksy",
"name": "Grave Bramble",
"target_type": "permanent",
"index": 0,
"power": "3",
"id": "p36",
"toughness": "4"
},
{
"tapped": true,
"controller": "Opus Folksy",
"name": "Spark Reaper",
"target_type": "permanent",
"index": 1,
"power": "2",
"id": "p13",
"toughness": "3"
}
],
"board": [
{
"hand_size": 2,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": false,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 27,
"life": 18,
"hand": [
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 3,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 28,
"life": 16
}
]
}major blunder
GPT5 Teach timed out and took no action with 5 available mana and strong plays in hand.
GPT5 Teach timed out and took no action with 5 available mana and strong plays in hand. Berg Strider could have been cast to tap down Grave Bramble (the opponent's main blocker) with snow mana freeze, or Frostpeak Yeti could have added a 3/3 body. Additionally, Avalanche Caller could animate a snow land for a 4/4 hexproof haste attacker. Missing an entire turn of development when they have board presence and the opponent is partially tapped out is devastating.
Analysis
Action taken: Timed out and passed without casting anything or activating any abilities.
Better line: Cast Berg Strider (spending Snow-Covered Island for {S}) to tap down Grave Bramble and prevent it from untapping, then attack with available creatures. Alternatively, cast Frostpeak Yeti and use Icebind Pillar to tap Grave Bramble before combat.
minor blunder
Activating Avalanche Caller costs 2 mana, leaving only 3 mana — not enough to cast Berg Strider (5 mana) or Frostpeak Ye…
Activating Avalanche Caller costs 2 mana, leaving only 3 mana — not enough to cast Berg Strider (5 mana) or Frostpeak Yeti (4 mana). This trades deploying a permanent 4/4 body (Berg Strider) with a powerful ETB tap+freeze effect for a temporary 4/4 attacker that reverts at end of turn and risks losing a land.
Analysis
Action taken: Activated Avalanche Caller to animate a snow land as a temporary 4/4, forgoing casting a permanent creature this turn.
Better line: Cast Berg Strider for {4}{U} (spending snow mana for the freeze), getting a permanent 4/4 body and tapping down Grave Bramble or Spark Reaper for potentially two turns, creating much better board presence and tempo.
gameGPT5 Teach casts Berg Strider from hand
gameGPT5 Teach puts Berg Strider from stack onto the Battlefield
GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p36, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 319,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_target_0",
"warning": "Both id and index provided; used id=p36, ignored index=0",
"next_action_message": "Play instants and activated abilities"
}GPT5 Teachllm
pass_priority(until=begin_combat, board_cursor=25)
{
"combat_phase": "attackers",
"game_seq": 325,
"action_type": "GAME_SELECT",
"context": "T6 Combat/Declare Attackers (GPT5 Teach)",
"stop_reason": "combat",
"response_type": "select",
"respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
"message": "Select attackers",
"board_cursor": 26,
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"choice_type": "attacker",
"id": "p39",
"power": "1",
"toughness": "3"
},
{
"name": "Goblin Shortcutter",
"index": 1,
"choice_type": "attacker",
"id": "p25",
"power": "2",
"toughness": "1"
},
{
"name": "All attack",
"index": 2,
"choice_type": "special",
"id": "all"
}
],
"board": [
{
"hand_size": 2,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": false,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 27,
"life": 18,
"hand": [
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 3,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 28,
"life": 16
}
],
"action_pending": true
}minor blunder
Berg Strider's ETB trigger should target Spark Reaper instead of Grave Bramble.
Berg Strider's ETB trigger should target Spark Reaper instead of Grave Bramble. Grave Bramble has defender and can't attack anyway, so tapping it accomplishes very little. Spark Reaper is already tapped but if snow mana was spent (Berg Strider was cast with Snow-Covered Islands), the 'doesn't untap' clause would keep Spark Reaper locked down for an extra turn, preventing the opponent from using it to block or sacrifice creatures for value. Even without the snow clause, targeting a creature that can actually block or attack is more impactful than tapping a defender.
Analysis
Action taken: Targeted Grave Bramble with Berg Strider's ETB tap ability
Better line: Target Spark Reaper to keep it tapped down (especially if snow mana was spent, preventing it from untapping), denying the opponent a blocker and sacrifice outlet
gameGPT5 Teach - Ability triggers: Berg Strider - When Berg Strider enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step. - targeting Grave Bramble
— Declare Attackers —
GPT5 TeachmcpAttack with Avalanche Caller 1/3, Goblin Shortcutter 2/1
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=["p39","p25"], blockers=[], id=, text=)
{
"declared": [
"p39",
"p25"
],
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 325,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "batch_attack",
"next_action_message": "Play instants and activated abilities"
}GPT5 Teachllm
pass_priority(until=postcombat_main, board_cursor=26)
{
"land_drops_used": 1,
"game_seq": 342,
"action_type": "GAME_SELECT",
"context": "T6 Postcombat Main/Postcombat Main (GPT5 Teach) YOUR_MAIN",
"stop_reason": "reached_step",
"response_type": "boolean",
"respond_with": "answer=true (confirm) or answer=false (pass)",
"message": "Play spells and abilities",
"board_cursor": 27,
"board": [
{
"hand_size": 2,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 27,
"life": 18,
"hand": [
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 3,
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 28,
"life": 13
}
],
"action_pending": true,
"current_step": "Postcombat Main"
}minor blunder
Opponent has no untapped creatures to block (Grave Bramble and Spark Reaper are both tapped).
Opponent has no untapped creatures to block (Grave Bramble and Spark Reaper are both tapped). Attacking with only Avalanche Caller (1 power) instead of both Avalanche Caller and Goblin Shortcutter (3 total power) leaves 2 free damage on the table.
Analysis
Action taken: Attacked with only Avalanche Caller for 1 damage.
Better line: Attack with all available creatures (Avalanche Caller + Goblin Shortcutter) for 3 damage since the opponent has no untapped blockers.
gameGPT5 Teach attacks Opus Folksy with 2 creatures
— Declare Blockers —
gameOpus Folksy loses 1 life at combat from Avalanche Caller
gameOpus Folksy loses 2 life at combat from Goblin Shortcutter
— Combat Damage —
— Postcombat Main —
GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
"game_seq": 342,
"success": true,
"action_taken": "passed_priority"
}gameBerg Strider: Grave Bramble doesn't untap (Berg Strider)
— Opus Folksy's Turn 7 —
chatOpus Folksy: Well I'll be — that Berg Strider is a real cold customer! As my grandma used to say, when it rains, it pours. But the sun'll come out eventually, you mark my words.
Opus Folksyllm
pass_priority(until=my_turn, board_cursor=19)
{
"game_seq": 347,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 6,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"has_playable_cards": true,
"context": "T7 Precombat Main/Precombat Main (Opus Folksy) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 20,
"choices": [
{
"name": "Forest",
"index": 0,
"action": "land",
"id": "p12"
},
{
"mana_cost": "{G}",
"name": "Portcullis Vine",
"index": 1,
"action": "cast",
"id": "p49",
"power": "0",
"toughness": "3"
},
{
"name": "Spark Reaper",
"index": 2,
"action": "activate",
"playable_abilities": [
"{3}, Sacrifice a creature or planeswalker: You ga..."
],
"id": "p13"
},
{
"name": "Swamp",
"index": 3,
"action": "land",
"id": "p16"
}
],
"board": [
{
"hand_size": 4,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 27,
"life": 13,
"hand": [
{
"name": "Forest",
"is_land": true,
"rules": [
"{T}: Add {G}."
],
"id": "p12",
"playable": true
},
{
"mana_cost": "{G}",
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"power": "0",
"id": "p49",
"toughness": "3",
"playable": true
},
{
"mana_cost": "{7}",
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"power": "5",
"id": "p33",
"toughness": "7"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16",
"playable": true
}
]
},
{
"hand_size": 2,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 27,
"life": 18
}
]
}thinkingOpus Folksy
Turn 7. I'm down to 13 life — opponent must have hit me with Goblin Shortcutter and an Avalanche Caller-animated snow land. They also played Berg Strider (4/4) which tapped my Grave Bramble and it won't untap if snow mana was used.
I drew Portcullis Vine — 0/3 defender for {G} that can sacrifice a defender to draw a card. That's useful with my Grave Bramble and can also block.
Let me play a land and Portcullis Vine. I should play Forest to have more green mana available.
mcpsend_chat_messageraw
send_chat_message(message=Well I'll be — that Berg Strider is a re...)
{
"success": true
}Opus FolksymcpPlay Forest
raw
choose_action(id=p12)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 347,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"next_action_message": "Play spells and abilities"
}thinkingOpus Folksy
Now cast Portcullis Vine for {G}.
llmchoose_action(id=p49)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 350,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"next_action_message": "Play instants and activated abilities"
}gameOpus Folksy puts Forest from hand onto the Battlefield
thinkingOpus Folksy
Good. Now let me check if there's anything else to do before combat.
llmpass_priority(until=declare_attackers, board_cursor=20)
{
"combat_phase": "attackers",
"game_seq": 359,
"action_type": "GAME_SELECT",
"stop_reason": "combat",
"response_type": "select",
"untapped_lands": 5,
"message": "Select attackers",
"action_pending": true,
"context": "T7 Combat/Declare Attackers (Opus Folksy)",
"respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
"board_cursor": 22,
"choices": [
{
"name": "Spark Reaper",
"index": 0,
"choice_type": "attacker",
"id": "p13",
"power": "2",
"toughness": "3"
},
{
"name": "All attack",
"index": 1,
"choice_type": "special",
"id": "all"
}
],
"board": [
{
"hand_size": 2,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": true,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": false,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 27,
"life": 13,
"hand": [
{
"mana_cost": "{7}",
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"power": "5",
"id": "p33",
"toughness": "7"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16"
}
]
},
{
"hand_size": 2,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 27,
"life": 18
}
]
}gameOpus Folksy casts Portcullis Vine from hand
gameOpus Folksy puts Portcullis Vine from stack onto the Battlefield
— Declare Attackers —
thinkingOpus Folksy
All opponent creatures are tapped or sick. Spark Reaper can swing in unblocked for 2 damage!
mcpAttack with Spark Reaper 2/3raw
choose_action(attackers=["p13"])
{
"declared": [
"p13"
],
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 359,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "batch_attack",
"next_action_message": "Play instants and activated abilities"
}gameOpus Folksy attacks GPT5 Teach with 1 creature
— Declare Blockers —
chatGPT5 Teach: No free swings—Strider snaps off that block. Either you sac Reaper for a card or I eat it. Fundamentals!
GPT5 Teachllm
pass_priority(until=my_turn, board_cursor=27)
{
"combat_phase": "blockers",
"game_seq": 365,
"action_type": "GAME_SELECT",
"stop_reason": "combat",
"response_type": "select",
"combat": [
{
"blocked": false,
"defending": "GPT5 Teach",
"attackers": [
{
"name": "Spark Reaper",
"id": "p13",
"power": "2",
"toughness": "3"
}
]
}
],
"message": "Select blockers",
"action_pending": true,
"context": "T7 Combat/Declare Blockers (Opus Folksy)",
"recent_chat": [
"Opus Folksy: Well I'll be — that Berg Strider is a real cold customer! As my grandma used to say, when it rains, it pours. But the sun'll come out eventually, you mark my words."
],
"respond_with": "blockers=[\"pN:pM\",...] (blocker:attacker) or answer=true (confirm) or answer=false (skip)",
"board_cursor": 28,
"choices": [
{
"name": "Berg Strider",
"index": 0,
"choice_type": "blocker",
"id": "p23",
"power": "4",
"toughness": "4"
}
],
"board": [
{
"hand_size": 2,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 27,
"life": 18,
"hand": [
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 2,
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": true,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 27,
"life": 13
}
],
"incoming_attackers": [
{
"name": "Spark Reaper",
"id": "p13",
"power": "2",
"toughness": "3"
}
]
}GPT5 Teachmcpsend_chat_message
raw
send_chat_message(message=No free swings—Strider snaps off that bl...)
{
"success": true
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=true, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=["p23:p13"], id=, text=)
{
"declared": [
{
"id": "p23",
"blocks": "p13"
}
],
"game_seq": 365,
"success": true,
"action_taken": "batch_block"
}GPT5 Teachllm
pass_priority(until=postcombat_main, board_cursor=28)
{
"game_seq": 382,
"action_type": "GAME_SELECT",
"context": "T7 Postcombat Main/Postcombat Main (Opus Folksy)",
"stop_reason": "reached_step",
"response_type": "boolean",
"respond_with": "answer=true (confirm) or answer=false (pass)",
"message": "Play instants and activated abilities",
"board_cursor": 29,
"board": [
{
"hand_size": 2,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 27,
"life": 18,
"hand": [
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 3,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": true,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 26,
"life": 14
}
],
"action_pending": true,
"current_step": "Postcombat Main"
}gameAttacker: Spark Reaper (2/3) blocked by Berg Strider (4/4)
Opus Folksyllm
pass_priority(until=end_of_turn, board_cursor=22)
{
"game_seq": 369,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 5,
"combat": [
{
"blocked": true,
"defending": "GPT5 Teach",
"attackers": [
{
"name": "Spark Reaper",
"id": "p13",
"power": "2",
"toughness": "3"
}
],
"blockers": [
{
"name": "Berg Strider",
"id": "p23",
"power": "4",
"toughness": "4"
}
]
}
],
"message": "Play instants and activated abilities",
"action_pending": true,
"has_playable_cards": true,
"context": "T7 Combat/Declare Blockers (Opus Folksy)",
"recent_chat": [
"GPT5 Teach: No free swings—Strider snaps off that block. Either you sac Reaper for a card or I eat it. Fundamentals!"
],
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 23,
"choices": [
{
"name": "Spark Reaper",
"index": 0,
"action": "activate",
"playable_abilities": [
"{3}, Sacrifice a creature or planeswalker: You ga..."
],
"id": "p13"
}
],
"board": [
{
"hand_size": 2,
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": true,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": true,
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13",
"power": "2",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 27,
"life": 13,
"hand": [
{
"mana_cost": "{7}",
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"power": "5",
"id": "p33",
"toughness": "7"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16"
}
]
},
{
"hand_size": 2,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": true
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 27,
"life": 18
}
]
}thinkingOpus Folksy
Wait, Berg Strider blocked my Spark Reaper?! But Berg Strider had summoning sickness... again, summoning sickness doesn't prevent blocking. Darn.
Berg Strider is 4/4 — it will kill my Spark Reaper (2/3), while my Reaper deals 2 damage to it, leaving it at 4/2.
Hmm, I could activate Spark Reaper's ability ({3}, sacrifice a creature or planeswalker: gain 1 life and draw a card) to sacrifice it before combat damage. I'd lose Spark Reaper either way — I either sacrifice it and draw a card + gain 1 life, or it dies in combat for nothing. Sacrificing it is strictly better! I have 5 untapped lands (3 Swamps, 2 Forests), so I can pay the {3} cost.
But wait — if I sacrifice it, it's removed from combat, so Berg Strider takes no combat damage. That means the 4/4 stays undamaged. Vs if combat happens, Berg Strider takes 2 damage and Spark Reaper dies. So it's: draw a card and gain 1 life, but opponent's Berg Strider stays at full health. vs. deal 2 damage to Berg Strider but lose Spark Reaper for nothing.
Drawing a card is much more valuable than 2 damage on a creature I probably can't remove anyway. Let me sacrifice Spark Reaper to itself.
Opus FolksymcpActivate Spark Reaper
raw
choose_action(id=p13)
{
"next_action_pending": true,
"next_action_type": "GAME_TARGET",
"game_seq": 369,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"next_action_message": "Select a creature or planeswalker (to sacrifice)"
}thinkingOpus Folksy
It's asking me to select a creature to sacrifice. I'll sacrifice Spark Reaper itself.
llmchoose_action(id=p13)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 373,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_target_2",
"next_action_message": "Play instants and activated abilities"
}thinkingOpus Folksy
Good — sacrificed Spark Reaper, drew a card and gained 1 life. Now pass priority.
gameOpus Folksy sacrificed Spark Reaper (source: Spark Reaper)
gameOpus Folksy activates: you gain 1 life and draw a card. from Spark Reaper
gameOpus Folksy gains 1 life (source: Spark Reaper)
— Postcombat Main —
GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 382,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play spells and abilities"
}GPT5 Teachllm
pass_priority(until=my_turn, board_cursor=29)
{
"combat_phase": "attackers",
"game_seq": 385,
"action_type": "GAME_SELECT",
"stop_reason": "combat",
"response_type": "select",
"untapped_lands": 5,
"message": "Select attackers",
"action_pending": true,
"context": "T7 Combat/Declare Attackers (GPT5 Teach)",
"respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
"board_cursor": 30,
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"choice_type": "attacker",
"id": "p39",
"power": "1",
"toughness": "3"
},
{
"name": "Goblin Shortcutter",
"index": 1,
"choice_type": "attacker",
"id": "p25",
"power": "2",
"toughness": "1"
},
{
"name": "Berg Strider",
"index": 2,
"choice_type": "attacker",
"id": "p23",
"power": "4",
"toughness": "4"
},
{
"name": "All attack",
"index": 3,
"choice_type": "special",
"id": "all"
}
],
"board": [
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 26,
"life": 18,
"hand": [
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
},
{
"name": "Snow-Covered Island",
"is_land": true,
"rules": [
"{T}: Add {U}."
],
"id": "p53"
}
]
},
{
"hand_size": 3,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": true,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 26,
"life": 14
}
]
}— GPT5 Teach's Turn 7 —
— Declare Attackers —
GPT5 TeachmcpAttack with Berg Strider 4/4, Goblin Shortcutter 2/1, Avalanche Caller 1/3
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=["p23","p25","p39"], blockers=[], id=, text=)
{
"declared": [
"p23",
"p25",
"p39"
],
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 385,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "batch_attack",
"next_action_message": "Play instants and activated abilities"
}moderate blunder
Opponent has almost no blockers available (only Portcullis Vine 0/3).
Opponent has almost no blockers available (only Portcullis Vine 0/3). Attacking with just Avalanche Caller 1/3 instead of all creatures wastes the opportunity to deal 6-7 damage to a 14-life opponent. Berg Strider alone would deal 4 damage unblocked.
Analysis
Action taken: Attacked with only Avalanche Caller 1/3
Better line: Attack with all three creatures (Berg Strider 4/4, Goblin Shortcutter 2/1, and Avalanche Caller 1/3) to maximize damage while the opponent's board is mostly tapped down.
gameGPT5 Teach attacks Opus Folksy with 3 creatures
— Declare Blockers —
Opus Folksyllm
pass_priority(until=end_of_turn, board_cursor=23)
{
"combat_phase": "blockers",
"game_seq": 394,
"action_type": "GAME_SELECT",
"stop_reason": "combat",
"response_type": "select",
"untapped_lands": 2,
"combat": [
{
"blocked": false,
"defending": "Opus Folksy",
"attackers": [
{
"name": "Berg Strider",
"id": "p23",
"power": "4",
"toughness": "4"
}
]
},
{
"blocked": false,
"defending": "Opus Folksy",
"attackers": [
{
"name": "Goblin Shortcutter",
"id": "p25",
"power": "2",
"toughness": "1"
}
]
},
{
"blocked": false,
"defending": "Opus Folksy",
"attackers": [
{
"name": "Avalanche Caller",
"id": "p39",
"power": "1",
"toughness": "3"
}
]
}
],
"message": "Select blockers",
"action_pending": true,
"context": "T7 Combat/Declare Blockers (GPT5 Teach)",
"respond_with": "blockers=[\"pN:pM\",...] (blocker:attacker) or answer=true (confirm) or answer=false (skip)",
"board_cursor": 25,
"choices": [
{
"name": "Portcullis Vine",
"index": 0,
"choice_type": "blocker",
"id": "p49",
"power": "0",
"toughness": "3"
}
],
"board": [
{
"hand_size": 3,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": true,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 26,
"life": 14,
"hand": [
{
"mana_cost": "{5}{B}",
"name": "Ossuary Rats",
"rules": [
"When {this} enters, it deals 1 damage to target creature or planeswalker an opponent controls for each creature cards in your graveyard.",
": ",
"Creatures in your graveyard: 1"
],
"power": "3",
"id": "p52",
"toughness": "2"
},
{
"mana_cost": "{7}",
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"power": "5",
"id": "p33",
"toughness": "7"
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16"
}
]
},
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 26,
"life": 18
}
],
"incoming_attackers": [
{
"name": "Berg Strider",
"id": "p23",
"power": "4",
"toughness": "4"
},
{
"name": "Goblin Shortcutter",
"id": "p25",
"power": "2",
"toughness": "1"
},
{
"name": "Avalanche Caller",
"id": "p39",
"power": "1",
"toughness": "3"
}
]
}thinkingOpus Folksy
Wait — I gained 1 life (now 14), drew Ossuary Rats ({5}{B} 3/2 that deals damage on ETB based on creatures in graveyard). Nice.
Now my opponent is attacking with Berg Strider (4/4), Goblin Shortcutter (2/1), and Avalanche Caller (1/3). That's 7 total damage, putting me to 7.
I can block with Portcullis Vine (0/3) but Grave Bramble is tapped. Portcullis Vine has summoning sickness but that doesn't matter for blocking.
Best block: Put Portcullis Vine in front of Berg Strider (4/4). It blocks 4 damage and trades for 0/3 dying. Or in front of Goblin Shortcutter (2/1) — it blocks 2 damage and dies. Or Avalanche Caller (1/3) — blocks 1 damage and dies.
Block Berg Strider to prevent the most damage. Portcullis Vine dies (4 damage vs 3 toughness), but I prevent 4 damage instead of taking 7 total. I'd take 3 (2+1) instead of 7.
mcpPortcullis Vine blocks p42raw
choose_action(blockers=["p49:p42"])
{
"declared": [],
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 394,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "batch_block",
"failed": [
{
"reason": "unknown attacker ID: p42",
"id": "p49"
}
],
"next_action_message": "Play instants and activated abilities"
}thinkingOpus Folksy
Hmm, the attacker IDs weren't what I expected. Let me check the actual IDs.
thinkingOpus Folksy
It seems the blocking phase already passed with 0 declared blockers and now I'm at the "play instants" step with no choices. The combat already resolved the blockers step. Let me pass.
Wait — it says Choices (0) and I can confirm or pass. It's asking if I want to play instants before damage. I have nothing to play. Let me pass.
mcpPassraw
choose_action(answer=false)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 402,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play instants and activated abilities"
}gameOpus Folksy loses 4 life at combat from Berg Strider
gameOpus Folksy loses 2 life at combat from Goblin Shortcutter
gameOpus Folksy loses 1 life at combat from Avalanche Caller
— Combat Damage —
— Postcombat Main —
GPT5 Teachllm
pass_priority(until=postcombat_main, board_cursor=30)
{
"game_seq": 409,
"action_type": "GAME_SELECT",
"stop_reason": "reached_step",
"response_type": "select",
"untapped_lands": 5,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"context": "T7 Postcombat Main/Postcombat Main (GPT5 Teach) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 31,
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"action": "activate",
"playable_abilities": [
"{2}: Target snow land you control becomes a 4/4 E..."
],
"id": "p39"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"index": 1,
"action": "cast",
"id": "p34",
"power": "3",
"toughness": "3"
},
{
"name": "Icebind Pillar",
"index": 2,
"action": "activate",
"playable_abilities": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"name": "Snow-Covered Island",
"index": 3,
"action": "land",
"id": "p53"
}
],
"board": [
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
}
],
"name": "GPT5 Teach",
"library_size": 26,
"life": 18,
"hand": [
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3",
"playable": true
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
},
{
"name": "Snow-Covered Island",
"is_land": true,
"rules": [
"{T}: Add {U}."
],
"id": "p53",
"playable": true
}
]
},
{
"hand_size": 3,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": true,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": true
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 26,
"life": 7
}
],
"current_step": "Postcombat Main"
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p53, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 409,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_3",
"warning": "Both id and index provided; used id=p53, ignored index=0",
"next_action_message": "Play spells and abilities"
}minor blunder
Activating Avalanche Caller in postcombat main phase to animate a snow land until end of turn is pointless - combat is a…
Activating Avalanche Caller in postcombat main phase to animate a snow land until end of turn is pointless - combat is already over, so even though the land gets haste, it can't attack. The creature reverts at end of turn, providing no lasting value. This wastes 2 mana that could have been kept open or used more productively.
Analysis
Action taken: Activated Avalanche Caller postcombat to animate a snow land that will revert at end of turn with no combat to use it in.
Better line: Play Snow-Covered Island first (free land drop), then cast Frostpeak Yeti ({3}{U}) to develop the board with a 3/3 that threatens unblockable damage next turn against an opponent at 7 life. Save the remaining mana for Icebind Pillar activation if needed.
gameGPT5 Teach puts Snow-Covered Island from hand onto the Battlefield
— Opus Folksy's Turn 8 —
Opus Folksyllm
pass_priority(until=my_turn, board_cursor=25)
{
"game_seq": 414,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 7,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"has_playable_cards": true,
"context": "T8 Precombat Main/Precombat Main (Opus Folksy) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 26,
"choices": [
{
"mana_cost": "{2}{G}",
"name": "Crushing Canopy",
"index": 0,
"action": "cast",
"id": "p54"
},
{
"mana_cost": "{5}{B}",
"name": "Ossuary Rats",
"index": 1,
"action": "cast",
"id": "p52",
"power": "3",
"toughness": "2"
},
{
"name": "Portcullis Vine",
"index": 2,
"action": "activate",
"playable_abilities": [
"{2}, {T}, Sacrifice a creature with defender: Dra..."
],
"id": "p49"
},
{
"mana_cost": "{7}",
"name": "Roving Keep",
"index": 3,
"action": "cast",
"id": "p33",
"power": "5",
"toughness": "7"
},
{
"name": "Swamp",
"index": 4,
"action": "land",
"id": "p16"
}
],
"board": [
{
"hand_size": 4,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 25,
"life": 7,
"hand": [
{
"mana_cost": "{2}{G}",
"name": "Crushing Canopy",
"rules": [
"Choose one —: &bull Destroy target creature with flying.: &bull Destroy target enchantment.: "
],
"id": "p54",
"playable": true
},
{
"mana_cost": "{5}{B}",
"name": "Ossuary Rats",
"rules": [
"When {this} enters, it deals 1 damage to target creature or planeswalker an opponent controls for each creature cards in your graveyard.",
": ",
"Creatures in your graveyard: 1"
],
"power": "3",
"id": "p52",
"toughness": "2",
"playable": true
},
{
"mana_cost": "{7}",
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"power": "5",
"id": "p33",
"toughness": "7",
"playable": true
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p16",
"playable": true
}
]
},
{
"hand_size": 2,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p53"
}
],
"name": "GPT5 Teach",
"library_size": 26,
"life": 18
}
]
}thinkingOpus Folksy
Turn 8. I'm at 7 life, took 7 damage last turn (4+2+1). I drew Crushing Canopy ({2}{G} - destroy flying creature or enchantment).
Opponent has all creatures tapped from attacking. Let me think about my options:
1. **Crushing Canopy** - Can destroy Icebind Pillar (it's an artifact, not enchantment)... wait, it destroys enchantments or flying creatures. Icebind Pillar is an artifact. None of their creatures have flying. So this isn't useful right now.
2. **Ossuary Rats** ({5}{B} 3/2) - Costs 6 mana. I have 7 lands (3 Forests, 4 Swamps). I can play Swamp and have 8 mana. Wait, I need {5}{B} = 6 mana. I can cast this! With only 1 creature in graveyard (Spark Reaper), the ETB deals 1 damage to a creature. I could target Avalanche Caller or Goblin Shortcutter to kill them.
3. **Roving Keep** ({7}) - 7 mana. If I play my Swamp, I have 8 lands. I can cast it! 5/7 defender that can attack for 7 mana activation. That's a solid blocker.
4. **Portcullis Vine** ability - {2}, {T}, sacrifice a defender: draw a card.
I should play Swamp first. Then I have 8 lands total. I can cast either Ossuary Rats (6 mana) or Roving Keep (7 mana).
Roving Keep (5/7) is a better blocker against Berg Strider (4/4) and their army. It completely walls everything they have. But Ossuary Rats (3/2) can attack and its ETB kills a small creature.
Actually, I'm at 7 life and facing 7 damage per turn. I need defense desperately. Roving Keep 5/7 blocks everything they have. Let me cast Roving Keep.
Wait, but if I cast Roving Keep for 7, I only have 1 mana left. If I cast Ossuary Rats for 6, I have 2 mana left. Ossuary Rats can attack (no defender) and its ETB can kill Avalanche Caller (1/3) or Goblin Shortcutter (2/1). That gives me a 3/2 attacker and removes a threat.
The problem is I need to survive the next attack. If I have Roving Keep (5/7) + Grave Bramble (3/4) + Portcullis Vine (0/3) as blockers, that's very strong. Roving Keep blocks Berg Strider (4/4 vs 5/7 - survives), Grave Bramble blocks Goblin Shortcutter or Avalanche Caller, and Portcullis Vine blocks the other.
Alternatively with Ossuary Rats: Grave Bramble (3/4) blocks Berg Strider but doesn't kill it and takes 4 damage (dies), Portcullis Vine blocks Shortcutter... this is worse.
Roving Keep is the play. It stabilizes the board.
mcpPlay Swampraw
choose_action(id=p16)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 414,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_4",
"next_action_message": "Play spells and abilities"
}thinkingOpus Folksy
Now cast Roving Keep for {7}.
llmchoose_action(id=p33)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 418,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_3",
"next_action_message": "Play instants and activated abilities"
}gameOpus Folksy puts Swamp from hand onto the Battlefield
thinkingOpus Folksy
Good, Roving Keep cast for 7 mana. Now let me check what's left.
gameOpus Folksy casts Roving Keep from hand
GPT5 Teachllm
pass_priority(until=end_of_turn, board_cursor=31)
{
"stack": [
{
"name": "Roving Keep"
}
],
"game_seq": 428,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 6,
"message": "Play instants and activated abilities",
"action_pending": true,
"has_playable_cards": true,
"context": "T8 Precombat Main/Precombat Main (Opus Folksy)",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 32,
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"action": "activate",
"playable_abilities": [
"{2}: Target snow land you control becomes a 4/4 E..."
],
"id": "p39"
},
{
"name": "Icebind Pillar",
"index": 1,
"action": "activate",
"playable_abilities": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
}
],
"board": [
{
"hand_size": 2,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p53"
}
],
"name": "GPT5 Teach",
"library_size": 26,
"life": 18,
"hand": [
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 2,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 25,
"life": 7
}
]
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_TARGET",
"game_seq": 428,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"next_action_message": "Select a snow land you control"
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=3, mana_plan=[], attackers=[], blockers=[], id=p53, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 429,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_target_2",
"warning": "Both id and index provided; used id=p53, ignored index=3",
"next_action_message": "Play instants and activated abilities"
}GPT5 Teachllm
pass_priority(until=stack_resolved, board_cursor=32)
{
"stack": [
{
"name": "Roving Keep"
}
],
"game_seq": 436,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 4,
"message": "Play instants and activated abilities",
"action_pending": true,
"has_playable_cards": true,
"context": "T8 Precombat Main/Precombat Main (Opus Folksy)",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 33,
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"action": "activate",
"playable_abilities": [
"{2}: Target snow land you control becomes a 4/4 E..."
],
"id": "p39"
},
{
"name": "Icebind Pillar",
"index": 1,
"action": "activate",
"playable_abilities": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
}
],
"board": [
{
"hand_size": 2,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"modified": true,
"rules": [
"{T}: Add {U}.",
"Hexproof",
"Haste"
],
"id": "p53",
"power": "4",
"toughness": "4",
"summoning_sick": false
}
],
"name": "GPT5 Teach",
"library_size": 26,
"life": 18,
"hand": [
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 2,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 25,
"life": 7
}
]
}gameGPT5 Teach activates: target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land. from Avalanche Caller targeting Snow-Covered Island
GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p39, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_TARGET",
"game_seq": 439,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"warning": "Both id and index provided; used id=p39, ignored index=0",
"next_action_message": "Select a snow land you control"
}gameOpus Folksy puts Roving Keep from stack onto the Battlefield
GPT5 Teachllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=2, mana_plan=[], attackers=[], blockers=[], id=p9, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 440,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_target_1",
"warning": "Both id and index provided; used id=p9, ignored index=2",
"next_action_message": "Play instants and activated abilities"
}GPT5 Teachllm
pass_priority(until=stack_resolved, board_cursor=33)
{
"game_seq": 447,
"action_type": "GAME_SELECT",
"context": "T8 Precombat Main/Precombat Main (Opus Folksy)",
"stop_reason": "stack_resolved",
"response_type": "select",
"untapped_lands": 2,
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"message": "Play instants and activated abilities",
"board_cursor": 35,
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"action": "activate",
"playable_abilities": [
"{2}: Target snow land you control becomes a 4/4 E..."
],
"id": "p39"
},
{
"name": "Icebind Pillar",
"index": 1,
"action": "activate",
"playable_abilities": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
}
],
"board": [
{
"hand_size": 2,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"modified": true,
"rules": [
"{T}: Add {U}.",
"Hexproof",
"Haste"
],
"id": "p9",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Snow-Covered Island",
"modified": true,
"rules": [
"{T}: Add {U}.",
"Hexproof",
"Haste"
],
"id": "p53",
"power": "4",
"toughness": "4",
"summoning_sick": false
}
],
"name": "GPT5 Teach",
"library_size": 26,
"life": 18,
"hand": [
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 2,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"id": "p33",
"power": "5",
"toughness": "7",
"summoning_sick": true
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 25,
"life": 7
}
],
"action_pending": true
}gameGPT5 Teach activates: target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land. from Avalanche Caller targeting Snow-Covered Island
GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_TARGET",
"game_seq": 451,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_0",
"next_action_message": "Select a snow land you control"
}moderate blunder
Activating Avalanche Caller instead of Icebind Pillar when the opponent is at 7 life.
Activating Avalanche Caller instead of Icebind Pillar when the opponent is at 7 life. Avalanche Caller's activation costs {2}, which would require tapping the untapped Snow-Covered Island (the only available attacker as a 4/4) for mana, and there's no untapped un-animated snow land to target. Meanwhile, Icebind Pillar could tap a blocker (like Grave Bramble) to let the 4/4 Snow-Covered Island attack through for 4 damage.
Analysis
Action taken: Activated Avalanche Caller, likely spending the Snow-Covered Island's mana and losing the 4/4 attacker for no useful effect.
Better line: Activate Icebind Pillar (using Snow-Covered Island to pay {S}) to tap Grave Bramble, then attack with the 4/4 Snow-Covered Island for 4 damage, putting opponent to 3 life.
— Declare Attackers —
Opus Folksyllm
pass_priority(until=declare_attackers, board_cursor=26)
{
"game_seq": 450,
"action_type": "GAME_SELECT",
"context": "T8 Combat/Declare Attackers (Opus Folksy)",
"stop_reason": "reached_step",
"response_type": "boolean",
"untapped_lands": 1,
"respond_with": "answer=true (confirm) or answer=false (pass)",
"message": "Play instants and activated abilities",
"board_cursor": 28,
"board": [
{
"hand_size": 2,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"id": "p33",
"power": "5",
"toughness": "7",
"summoning_sick": true
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 25,
"life": 7,
"hand": [
{
"mana_cost": "{2}{G}",
"name": "Crushing Canopy",
"rules": [
"Choose one —: &bull Destroy target creature with flying.: &bull Destroy target enchantment.: "
],
"id": "p54"
},
{
"mana_cost": "{5}{B}",
"name": "Ossuary Rats",
"rules": [
"When {this} enters, it deals 1 damage to target creature or planeswalker an opponent controls for each creature cards in your graveyard.",
": ",
"Creatures in your graveyard: 1"
],
"power": "3",
"id": "p52",
"toughness": "2"
}
]
},
{
"hand_size": 2,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": true,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": true,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}.",
"Hexproof",
"Haste"
],
"id": "p9",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}.",
"Hexproof",
"Haste"
],
"id": "p53",
"power": "4",
"toughness": "4",
"summoning_sick": false
}
],
"name": "GPT5 Teach",
"library_size": 26,
"life": 18
}
],
"action_pending": true,
"current_step": "Declare Attackers"
}thinkingOpus Folksy
Wait — there are two Snow-Covered Islands showing as 4/4! The opponent must have used Avalanche Caller's ability to animate snow lands into 4/4 creatures. One is tapped and one is untapped. But the opponent's creatures are all tapped from attacking...
Actually no, this is my combat phase. They animated a snow land before I declare attackers. The 4/4 Snow-Covered Island can block. I have no good attackers anyway (all my creatures have defender except... well, nothing useful). Let me skip attacking.
mcpPassraw
choose_action(answer=false)
{
"game_seq": 450,
"success": true,
"action_taken": "passed_priority"
}GPT5 Teachllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=1, mana_plan=[], attackers=[], blockers=[], id=p8, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 452,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_target_0",
"warning": "Both id and index provided; used id=p8, ignored index=1",
"next_action_message": "Play instants and activated abilities"
}GPT5 Teachllm
pass_priority(until=begin_combat, board_cursor=35)
{
"game_seq": 462,
"action_type": "GAME_SELECT",
"stop_reason": "step_not_reached",
"action_pending": true,
"current_step": "Precombat Main"
}gameGPT5 Teach activates: target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land. from Avalanche Caller targeting Snow-Covered Island
— Postcombat Main —
— GPT5 Teach's Turn 8 —
GPT5 Teachllm
pass_priority(until=declare_attackers, board_cursor=35)
{
"combat_phase": "attackers",
"game_seq": 464,
"action_type": "GAME_SELECT",
"stop_reason": "combat",
"response_type": "select",
"untapped_lands": 6,
"message": "Select attackers",
"action_pending": true,
"context": "T8 Combat/Declare Attackers (GPT5 Teach)",
"respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
"board_cursor": 36,
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"choice_type": "attacker",
"id": "p39",
"power": "1",
"toughness": "3"
},
{
"name": "Goblin Shortcutter",
"index": 1,
"choice_type": "attacker",
"id": "p25",
"power": "2",
"toughness": "1"
},
{
"name": "Berg Strider",
"index": 2,
"choice_type": "attacker",
"id": "p23",
"power": "4",
"toughness": "4"
},
{
"name": "All attack",
"index": 3,
"choice_type": "special",
"id": "all"
}
],
"board": [
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p53"
}
],
"name": "GPT5 Teach",
"library_size": 25,
"life": 18,
"hand": [
{
"mana_cost": "{2}{R}",
"name": "Boggart Brute",
"rules": [
"Menace (This creature can't be blocked except by two or more creatures.)"
],
"power": "3",
"id": "p59",
"toughness": "2"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 2,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"id": "p33",
"power": "5",
"toughness": "7",
"summoning_sick": true
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 25,
"life": 7
}
]
}— Declare Attackers —
GPT5 TeachmcpAttack with Berg Strider 4/4, Goblin Shortcutter 2/1
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=["p23","p25"], blockers=[], id=, text=)
{
"declared": [
"p23",
"p25"
],
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 464,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "batch_attack",
"next_action_message": "Play instants and activated abilities"
}moderate blunder
Opponent is at 7 life with only defender creatures (Grave Bramble 3/4, Portcullis Vine 0/3, Roving Keep 5/7) available t…
Opponent is at 7 life with only defender creatures (Grave Bramble 3/4, Portcullis Vine 0/3, Roving Keep 5/7) available to block. Attacking with only Avalanche Caller deals just 1 damage when much more pressure could be applied. Berg Strider 4/4 could also attack — it can only be effectively blocked by Roving Keep 5/7. Additionally, GPT5 Teach could animate a Snow-Covered Island into a 4/4 hexproof haste creature and attack with it too, creating more attackers than the opponent has meaningful blockers.
Analysis
Action taken: Attacked with only Avalanche Caller (1/3) for 1 damage.
Better line: Activate Avalanche Caller to animate a Snow-Covered Island into a 4/4 hexproof haste, then attack with Berg Strider, Goblin Shortcutter, the animated land, and possibly Avalanche Caller. With 4 attackers vs 3 defenders, at least one significant threat gets through, dealing 4+ damage and putting opponent in critical range.
gameGPT5 Teach attacks Opus Folksy with 2 creatures
— Declare Blockers —
Opus Folksyllm
pass_priority(until=my_turn, board_cursor=28)
{
"combat_phase": "blockers",
"game_seq": 472,
"action_type": "GAME_SELECT",
"stop_reason": "combat",
"response_type": "select",
"untapped_lands": 1,
"combat": [
{
"blocked": false,
"defending": "Opus Folksy",
"attackers": [
{
"name": "Berg Strider",
"id": "p23",
"power": "4",
"toughness": "4"
}
]
},
{
"blocked": false,
"defending": "Opus Folksy",
"attackers": [
{
"name": "Goblin Shortcutter",
"id": "p25",
"power": "2",
"toughness": "1"
}
]
}
],
"message": "Select blockers",
"action_pending": true,
"context": "T8 Combat/Declare Blockers (GPT5 Teach)",
"respond_with": "blockers=[\"pN:pM\",...] (blocker:attacker) or answer=true (confirm) or answer=false (skip)",
"board_cursor": 29,
"choices": [
{
"name": "Grave Bramble",
"index": 0,
"choice_type": "blocker",
"id": "p36",
"power": "3",
"toughness": "4"
},
{
"name": "Portcullis Vine",
"index": 1,
"choice_type": "blocker",
"id": "p49",
"power": "0",
"toughness": "3"
},
{
"name": "Roving Keep",
"index": 2,
"choice_type": "blocker",
"id": "p33",
"power": "5",
"toughness": "7"
}
],
"board": [
{
"hand_size": 2,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"id": "p33",
"power": "5",
"toughness": "7",
"summoning_sick": true
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 25,
"life": 7,
"hand": [
{
"mana_cost": "{2}{G}",
"name": "Crushing Canopy",
"rules": [
"Choose one —: &bull Destroy target creature with flying.: &bull Destroy target enchantment.: "
],
"id": "p54"
},
{
"mana_cost": "{5}{B}",
"name": "Ossuary Rats",
"rules": [
"When {this} enters, it deals 1 damage to target creature or planeswalker an opponent controls for each creature cards in your graveyard.",
": ",
"Creatures in your graveyard: 1"
],
"power": "3",
"id": "p52",
"toughness": "2"
}
]
},
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p53"
}
],
"name": "GPT5 Teach",
"library_size": 25,
"life": 18
}
],
"incoming_attackers": [
{
"name": "Berg Strider",
"id": "p23",
"power": "4",
"toughness": "4"
},
{
"name": "Goblin Shortcutter",
"id": "p25",
"power": "2",
"toughness": "1"
}
]
}thinkingOpus Folksy
Opponent is attacking with Berg Strider (4/4) and Goblin Shortcutter (2/1). That's 6 damage — I'm at 7 life, so I'd go to 1 if unblocked!
I need to block both. Let me use:
- Roving Keep (5/7) blocks Berg Strider (4/4) — Keep survives at 5/3, Berg Strider dies to 5 damage
- Grave Bramble (3/4) blocks Goblin Shortcutter (2/1) — Bramble survives at 3/2, Shortcutter dies to 3 damage
This is perfect! I kill both attackers and my blockers survive!
But wait — Roving Keep has summoning sickness. Can it block? Yes! Summoning sickness only prevents attacking and tapping.
mcpRoving Keep blocks p42, Grave Bramble blocks p39raw
choose_action(blockers=["p33:p42","p36:p39"])
{
"declared": [],
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 472,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "batch_block",
"failed": [
{
"reason": "unknown attacker ID: p42",
"id": "p33"
},
{
"reason": "attacker p39 is not a valid block target",
"id": "p36"
}
],
"next_action_message": "Play instants and activated abilities"
}thinkingOpus Folksy
The IDs are wrong again. Let me get the actual game state to find the correct IDs.
llmget_game_state()
{
"phase": "Combat",
"priority_player": "Opus Folksy",
"cursor": 13,
"stack": [],
"game_seq": 481,
"active_player": "GPT5 Teach",
"players": [
{
"hand_size": 2,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"id": "p33",
"power": "5",
"toughness": "7",
"summoning_sick": true
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 25,
"life": 7,
"hand": [
{
"mana_cost": "{2}{G}",
"name": "Crushing Canopy",
"rules": [
"Choose one —: &bull Destroy target creature with flying.: &bull Destroy target enchantment.: "
],
"id": "p54"
},
{
"mana_cost": "{5}{B}",
"name": "Ossuary Rats",
"rules": [
"When {this} enters, it deals 1 damage to target creature or planeswalker an opponent controls for each creature cards in your graveyard.",
": ",
"Creatures in your graveyard: 1"
],
"power": "3",
"id": "p52",
"toughness": "2"
}
]
},
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p53"
}
],
"name": "GPT5 Teach",
"library_size": 25,
"life": 18
}
],
"available": true,
"step": "Declare Blockers",
"combat": [
{
"blocked": false,
"defending": "Opus Folksy",
"attackers": [
{
"name": "Berg Strider",
"id": "p23",
"power": "4",
"toughness": "4"
}
]
},
{
"blocked": false,
"defending": "Opus Folksy",
"attackers": [
{
"name": "Goblin Shortcutter",
"id": "p25",
"power": "2",
"toughness": "1"
}
]
}
],
"turn": 8
}chatOpus Folksy: Well, you can't make an omelet without breaking a few eggs. Took some lumps there, but I ain't down for the count yet. The darkest hour is just before dawn, as they say!
thinkingOpus Folksy
Now I see the attacker IDs: Berg Strider is **p23** and Goblin Shortcutter is **p25**.
llmchoose_action(blockers=["p33:p23","p36:p25"])
{
"retryable": true,
"game_seq": 481,
"success": false,
"warning": "Ignored blockers parameter (not in declare_blockers phase)",
"error_code": "missing_param",
"error": "GAME_SELECT requires either index=N (from get_action_choices) to play a card, or answer=false to pass priority. Call get_action_choices first to see available cards."
}thinkingOpus Folksy
The blocker phase already passed. Let me check what's happening now.
thinkingOpus Folksy
The blocking phase already passed with no blockers declared. I'm now in the "play instants" step before damage. I have no instants to play. This means I'm taking 6 damage (4+2) going to 1 life. That's rough but I survive.
mcpPassraw
choose_action(answer=false)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 481,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "passed_priority",
"next_action_message": "Play instants and activated abilities"
}Opus Folksymcpsend_chat_message
raw
send_chat_message(message=Well, you can't make an omelet without b...)
{
"success": true
}gameOpus Folksy loses 4 life at combat from Berg Strider
gameOpus Folksy loses 2 life at combat from Goblin Shortcutter
— Combat Damage —
— Postcombat Main —
GPT5 Teachllm
pass_priority(until=postcombat_main, board_cursor=36)
{
"game_seq": 487,
"action_type": "GAME_SELECT",
"stop_reason": "reached_step",
"response_type": "select",
"untapped_lands": 6,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"context": "T8 Postcombat Main/Postcombat Main (GPT5 Teach) YOUR_MAIN",
"recent_chat": [
"Opus Folksy: Well, you can't make an omelet without breaking a few eggs. Took some lumps there, but I ain't down for the count yet. The darkest hour is just before dawn, as they say!"
],
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 37,
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"action": "activate",
"playable_abilities": [
"{2}: Target snow land you control becomes a 4/4 E..."
],
"id": "p39"
},
{
"mana_cost": "{2}{R}",
"name": "Boggart Brute",
"index": 1,
"action": "cast",
"id": "p59",
"power": "3",
"toughness": "2"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"index": 2,
"action": "cast",
"id": "p34",
"power": "3",
"toughness": "3"
},
{
"name": "Icebind Pillar",
"index": 3,
"action": "activate",
"playable_abilities": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"index": 4,
"action": "cast",
"id": "p6",
"power": "4",
"toughness": "4"
}
],
"board": [
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p53"
}
],
"name": "GPT5 Teach",
"library_size": 25,
"life": 18,
"hand": [
{
"mana_cost": "{2}{R}",
"name": "Boggart Brute",
"rules": [
"Menace (This creature can't be blocked except by two or more creatures.)"
],
"power": "3",
"id": "p59",
"toughness": "2",
"playable": true
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3",
"playable": true
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4",
"playable": true
}
]
},
{
"hand_size": 2,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"id": "p33",
"power": "5",
"toughness": "7",
"summoning_sick": true
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 25,
"life": 1
}
],
"current_step": "Postcombat Main"
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p59, text=)
{
"retryable": true,
"game_seq": 502,
"success": false,
"warning": "Both id and index provided; used id=p59, ignored index=0",
"error_code": "invalid_choice",
"error": "Object p59 not found in current choices",
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"action": "activate",
"playable_abilities": [
"{2}: Target snow land you control becomes a 4/4 E..."
],
"id": "p39"
},
{
"name": "Icebind Pillar",
"index": 1,
"action": "activate",
"playable_abilities": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
}
]
}moderate blunder
Opponent is at 1 life and GPT5 Teach timed out, casting nothing in postcombat main with 6 untapped lands and multiple ca…
Opponent is at 1 life and GPT5 Teach timed out, casting nothing in postcombat main with 6 untapped lands and multiple castable threats. Frostpeak Yeti (3/3 that can be made unblockable with snow mana) would guarantee lethal next turn through any blockers. Muxus was also castable at exactly 6 mana and could flood the board with goblins. Even Boggart Brute with menace would add pressure. Doing nothing gives the opponent a free turn to stabilize or find answers.
Analysis
Action taken: Timed out and passed without casting any spells
Better line: Cast Frostpeak Yeti (4 mana) to guarantee lethal next turn via its unblockable ability with snow mana, or cast Muxus (6 mana) for massive board presence. Even casting Boggart Brute would be better than nothing.
— Opus Folksy's Turn 9 —
Opus Folksyllm
pass_priority(until=my_turn, board_cursor=29)
{
"game_seq": 489,
"action_type": "GAME_SELECT",
"stop_reason": "playable_cards",
"response_type": "select",
"untapped_lands": 8,
"message": "Play spells and abilities",
"action_pending": true,
"land_drops_used": 0,
"has_playable_cards": true,
"context": "T9 Precombat Main/Precombat Main (Opus Folksy) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 30,
"choices": [
{
"mana_cost": "{2}{G}",
"name": "Crushing Canopy",
"index": 0,
"action": "cast",
"id": "p54"
},
{
"mana_cost": "{5}{B}",
"name": "Ossuary Rats",
"index": 1,
"action": "cast",
"id": "p52",
"power": "3",
"toughness": "2"
},
{
"name": "Portcullis Vine",
"index": 2,
"action": "activate",
"playable_abilities": [
"{2}, {T}, Sacrifice a creature with defender: Dra..."
],
"id": "p49"
},
{
"name": "Roving Keep",
"index": 3,
"action": "activate",
"playable_abilities": [
"{7}: {this} gets +2/+0 and gains trample until en..."
],
"id": "p33"
},
{
"name": "Swamp",
"index": 4,
"action": "land",
"id": "p60"
}
],
"board": [
{
"hand_size": 3,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"id": "p33",
"power": "5",
"toughness": "7",
"summoning_sick": false
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
}
],
"name": "Opus Folksy",
"library_size": 24,
"life": 1,
"hand": [
{
"mana_cost": "{2}{G}",
"name": "Crushing Canopy",
"rules": [
"Choose one —: &bull Destroy target creature with flying.: &bull Destroy target enchantment.: "
],
"id": "p54",
"playable": true
},
{
"mana_cost": "{5}{B}",
"name": "Ossuary Rats",
"rules": [
"When {this} enters, it deals 1 damage to target creature or planeswalker an opponent controls for each creature cards in your graveyard.",
": ",
"Creatures in your graveyard: 1"
],
"power": "3",
"id": "p52",
"toughness": "2",
"playable": true
},
{
"name": "Swamp",
"is_land": true,
"rules": [
"{T}: Add {B}."
],
"id": "p60",
"playable": true
}
]
},
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p53"
}
],
"name": "GPT5 Teach",
"library_size": 25,
"life": 18
}
]
}thinkingOpus Folksy
Turn 9. I'm at 1 life! This is extremely dire. I drew another Swamp. I have 8 untapped lands (3 Forests, 5 Swamps).
Opponent has Berg Strider (4/4, tapped) and Goblin Shortcutter (2/1, tapped) from last attack, plus Avalanche Caller (1/3, untapped).
Key: I MUST block everything this turn or I die. I need to think about what the opponent can attack with on their turn.
My blockers: Roving Keep (5/7), Grave Bramble (3/4), Portcullis Vine (0/3). That's three blockers.
Opponent's potential attackers: Berg Strider (4/4), Goblin Shortcutter (2/1), Avalanche Caller (1/3), plus any animated snow lands (4/4 hexproof). They have 3 Snow-Covered Islands and Avalanche Caller can animate them for {2} each. With 3 Mountains + 3 Snow Islands = 6 mana, they could animate potentially 3 snow lands (costs 6 mana) but each one also uses a land as the creature, reducing available mana.
Wait, Goblin Shortcutter's ETB makes a creature unable to block. If they play another Shortcutter... but that's from hand, not from the battlefield one.
The opponent could also use Icebind Pillar ({S}, {T}: tap target artifact or creature) to tap one of my blockers!
My plan:
1. Play Swamp (9 mana available)
2. Cast Ossuary Rats ({5}{B} = 6 mana) — 3/2 that deals 1 damage ETB (1 creature in graveyard). Target Avalanche Caller (1/3) to kill it! This removes the snow land animation threat!
3. That leaves 3 mana. I could also use Portcullis Vine's ability ({2}, {T}, sacrifice defender: draw a card) to sacrifice Portcullis Vine for a card draw if needed.
Actually wait, killing Avalanche Caller is HUGE. Without it, they can't animate snow lands into 4/4 hexproof creatures. Their attack force becomes Berg Strider (4/4) + Goblin Shortcutter (2/1) = 6 damage. I can block with Roving Keep (5/7) on Berg Strider (kills it) and Grave Bramble (3/4) on Goblin Shortcutter (kills it).
But they have Icebind Pillar to tap one of my blockers! If they tap Roving Keep, Berg Strider gets through for 4 and I die.
Hmm. Let me cast Ossuary Rats first to kill Avalanche Caller, then think about blocking.
Play Swamp, then Ossuary Rats.
mcpPlay Swampraw
choose_action(id=p60)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 489,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_4",
"next_action_message": "Play spells and abilities"
}Opus Folksyllm
choose_action(id=p52)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 493,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_1",
"next_action_message": "Play instants and activated abilities"
}gameOpus Folksy puts Swamp from hand onto the Battlefield
gameOpus Folksy casts Ossuary Rats from hand
gameOpus Folksy puts Ossuary Rats from stack onto the Battlefield
Opus Folksyllm
pass_priority(until=stack_resolved, board_cursor=30)
{
"stack": [
{
"name": "Ability"
}
],
"game_seq": 504,
"action_type": "GAME_TARGET",
"stop_reason": "non_priority_action",
"response_type": "index",
"can_cancel": false,
"untapped_lands": 3,
"message": "Select a creature or planeswalker an opponent controls",
"required": true,
"action_pending": true,
"land_drops_used": 1,
"context": "T9 Precombat Main/Precombat Main (Opus Folksy) YOUR_MAIN",
"respond_with": "id=\"pN\" or index=N",
"board_cursor": 32,
"choices": [
{
"controller": "GPT5 Teach",
"name": "Avalanche Caller",
"target_type": "permanent",
"index": 0,
"power": "1",
"id": "p39",
"toughness": "3"
},
{
"tapped": true,
"controller": "GPT5 Teach",
"name": "Berg Strider",
"target_type": "permanent",
"index": 1,
"power": "4",
"id": "p23",
"toughness": "4"
},
{
"tapped": true,
"controller": "GPT5 Teach",
"name": "Goblin Shortcutter",
"target_type": "permanent",
"index": 2,
"power": "2",
"id": "p25",
"toughness": "1"
}
],
"board": [
{
"hand_size": 1,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": true,
"is_you": true,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Ossuary Rats",
"modified": true,
"rules": [
"When {this} enters, it deals 1 damage to target creature or planeswalker an opponent controls for each creature cards in your graveyard.",
": ",
"Creatures in your graveyard: 1"
],
"id": "p52",
"power": "3",
"toughness": "2",
"summoning_sick": true
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"id": "p33",
"power": "5",
"toughness": "7",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p60"
}
],
"name": "Opus Folksy",
"library_size": 24,
"life": 1,
"hand": [
{
"mana_cost": "{2}{G}",
"name": "Crushing Canopy",
"rules": [
"Choose one —: &bull Destroy target creature with flying.: &bull Destroy target enchantment.: "
],
"id": "p54",
"playable": true
}
]
},
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": false,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": true,
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25",
"power": "2",
"toughness": "1",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p53"
}
],
"name": "GPT5 Teach",
"library_size": 25,
"life": 18
}
]
}thinkingOpus Folksy
Ossuary Rats ETB trigger — 1 damage to target creature. I need to kill Avalanche Caller (1/3)! 1 damage kills a 1/3? No, 1 damage to a 1/3 leaves it at 1/2. It doesn't kill it.
Hmm, then which target is best? Goblin Shortcutter is 2/1 — 1 damage kills it! That removes a 2/1 attacker. Berg Strider (4/4) — 1 damage leaves it at 4/3, irrelevant. Avalanche Caller (1/3) — 1 damage leaves it at 1/2.
Actually, killing Goblin Shortcutter saves me 2 damage per attack and removes the "can't block" ETB threat if they replay it. But Avalanche Caller's ability to animate 4/4 hexproof snow lands is more dangerous long-term.
At 1 life, I need to stop ALL damage. Let me kill Goblin Shortcutter to reduce the number of attackers I need to block next turn.
mcpGoblin Shortcutterraw
choose_action(id=p25)
{
"next_action_pending": true,
"next_action_type": "GAME_SELECT",
"game_seq": 504,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_target_2",
"next_action_message": "Play instants and activated abilities"
}thinkingOpus Folksy
Good, targeting Goblin Shortcutter with the 1 damage — kills it. Now let me think about what else to do.
I have 3 untapped lands (1 Forest, 2 Swamps) and Crushing Canopy in hand. Crushing Canopy ({2}{G}) can destroy enchantment or flying creature. Nothing useful to target right now.
I could use Portcullis Vine's ability ({2}, {T}, sacrifice defender: draw a card). This costs 2 mana and I sacrifice Portcullis Vine (a defender). But I need Portcullis Vine as a blocker! With it I have 4 potential blockers: Roving Keep, Grave Bramble, Portcullis Vine, and Ossuary Rats (summoning sick but can still block).
Opponent can attack with: Berg Strider (4/4), Avalanche Caller (1/3), plus animated snow lands (4/4 hexproof each, costs {2} per). They have 6 mana and 3 snow lands. They could animate up to 3 snow lands (6 mana = 3x{2}), giving them potentially 5 attackers! But each animated land is also their mana source, so animating 3 means using all their mana.
With Icebind Pillar they can also tap one of my blockers. They need {S} for that.
I need as many blockers as possible. Keep Portcullis Vine. Let me pass to combat.
gameOpus Folksy - Ability triggers: Ossuary Rats - When Ossuary Rats enters, it deals 1 damage to target creature or planeswalker an opponent controls for each creature cards in your graveyard. - targeting Goblin Shortcutter
gameOssuary Rats deals 1 damage to Goblin Shortcutter
gameGoblin Shortcutter died
— Declare Attackers —
chatGPT5 Teach: At 1 life with a fortress of blockers, huh? No rush—I’ll build the board and squeeze you out clean.
GPT5 Teachllm
pass_priority(until=declare_attackers, board_cursor=37)
{
"game_seq": 515,
"action_type": "GAME_SELECT",
"stop_reason": "reached_step",
"response_type": "select",
"untapped_lands": 6,
"message": "Play instants and activated abilities",
"action_pending": true,
"context": "T9 Combat/Declare Attackers (Opus Folksy)",
"respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
"board_cursor": 39,
"choices": [
{
"name": "Avalanche Caller",
"index": 0,
"action": "activate",
"playable_abilities": [
"{2}: Target snow land you control becomes a 4/4 E..."
],
"id": "p39"
},
{
"name": "Icebind Pillar",
"index": 1,
"action": "activate",
"playable_abilities": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
}
],
"board": [
{
"hand_size": 3,
"graveyard": [
{
"name": "Goblin Instigator",
"rules": [
"When {this} enters, create a 1/1 red Goblin creature token."
],
"id": "p29"
},
{
"name": "Goblin Shortcutter",
"rules": [
"When {this} enters, target creature can't block this turn."
],
"id": "p25"
},
{
"name": "Ornery Goblin",
"rules": [
"Whenever {this} blocks or becomes blocked by a creature, {this} deals 1 damage to that creature."
],
"id": "p7"
}
],
"is_active": false,
"is_you": true,
"battlefield": [
{
"tapped": false,
"name": "Avalanche Caller",
"rules": [
"{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land."
],
"id": "p39",
"power": "1",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": true,
"name": "Berg Strider",
"rules": [
"When {this} enters, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step."
],
"id": "p23",
"power": "4",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Icebind Pillar",
"rules": [
"{S}, {T}: Tap target artifact or creature."
],
"id": "p3"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p4"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p5"
},
{
"tapped": false,
"name": "Mountain",
"rules": [
"{T}: Add {R}."
],
"id": "p46"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p8"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p9"
},
{
"tapped": false,
"name": "Snow-Covered Island",
"rules": [
"{T}: Add {U}."
],
"id": "p53"
}
],
"name": "GPT5 Teach",
"library_size": 25,
"life": 18,
"hand": [
{
"mana_cost": "{2}{R}",
"name": "Boggart Brute",
"rules": [
"Menace (This creature can't be blocked except by two or more creatures.)"
],
"power": "3",
"id": "p59",
"toughness": "2"
},
{
"mana_cost": "{3}{U}",
"name": "Frostpeak Yeti",
"rules": [
"{1}{S}: {this} can't be blocked this turn."
],
"power": "3",
"id": "p34",
"toughness": "3"
},
{
"mana_cost": "{4}{R}{R}",
"name": "Muxus, Goblin Grandee",
"rules": [
"When {this} enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.",
"Whenever {this} attacks, it gets +1/+1 until end of turn for each other Goblin you control."
],
"power": "4",
"id": "p6",
"toughness": "4"
}
]
},
{
"hand_size": 1,
"graveyard": [
{
"name": "Spark Reaper",
"rules": [
"{3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card."
],
"id": "p13"
}
],
"is_active": true,
"is_you": false,
"battlefield": [
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p10"
},
{
"tapped": true,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p11"
},
{
"tapped": false,
"name": "Forest",
"rules": [
"{T}: Add {G}."
],
"id": "p12"
},
{
"tapped": false,
"name": "Grave Bramble",
"rules": [
"Defender",
"Protection from Zombies"
],
"id": "p36",
"power": "3",
"toughness": "4",
"summoning_sick": false
},
{
"tapped": false,
"name": "Ossuary Rats",
"rules": [
"When {this} enters, it deals 1 damage to target creature or planeswalker an opponent controls for each creature cards in your graveyard.",
": ",
"Creatures in your graveyard: 1"
],
"id": "p52",
"power": "3",
"toughness": "2",
"summoning_sick": true
},
{
"tapped": false,
"name": "Oversold Cemetery",
"rules": [
"At the beginning of your upkeep, if there are four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand."
],
"id": "p44"
},
{
"tapped": false,
"name": "Portcullis Vine",
"rules": [
"Defender",
"{2}, {T}, Sacrifice a creature with defender: Draw a card."
],
"id": "p49",
"power": "0",
"toughness": "3",
"summoning_sick": false
},
{
"tapped": false,
"name": "Roving Keep",
"rules": [
"Defender",
"{7}: {this} gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender."
],
"id": "p33",
"power": "5",
"toughness": "7",
"summoning_sick": false
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p14"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p15"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p16"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p24"
},
{
"tapped": true,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p27"
},
{
"tapped": false,
"name": "Swamp",
"rules": [
"{T}: Add {B}."
],
"id": "p60"
}
],
"name": "Opus Folksy",
"library_size": 24,
"life": 1
}
],
"current_step": "Declare Attackers"
}GPT5 Teachmcpsend_chat_message
raw
send_chat_message(message=At 1 life with a fortress of blockers, h...)
{
"success": true
}GPT5 TeachmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=true, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p3, text=)
{
"next_action_pending": true,
"next_action_type": "GAME_TARGET",
"game_seq": 517,
"next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
"success": true,
"action_taken": "selected_1",
"warning": "Both id and index provided; used id=p3, ignored index=0",
"next_action_message": "Select an artifact or creature"
}— Postcombat Main —
gameGPT5 Teach has lost the game.
Opus Folksyllm
pass_priority(until=declare_blockers, board_cursor=32)
{
"game_seq": 523,
"stop_reason": "game_over",
"game_over": true,
"recent_chat": [
"GPT5 Teach: At 1 life with a fortress of blockers, huh? No rush—I’ll build the board and squeeze you out clean."
],
"action_pending": false
}Opus Folksy wins the game!