Qwen3 Sport (Jeskai Control Woe) vs Opus Minimal (Boros Dragons Woe)
1 moderate, 1 questionable blunders
Season 1
/ 226
Stack
Game Log
llmQwen3 Sport game_start
llmOpus Minimal game_start
thinkingOpus Minimal
I'll choose to go first — tempo matters.
mcpOpus Minimal
raw
choose_action(id=p1)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "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"
}
thinkingOpus Minimal
On the play. Now let me see the mulligan decision.
thinkingOpus Minimal
Three lands, good curve with a 1-drop, 2-drop, and a 4-drop. Solid keep.
Opus MinimalmcpKeep hand
raw
choose_action(answer=false)
{
  "success": true,
  "action_taken": "no"
}
thinkingOpus Minimal
Kept 7. Clean hand. Now let's proceed to the game.
Qwen3 SportmcpMulligan
raw
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "yes"
}
Qwen3 SportmcpThe Unagi of Kyoshi Island
raw
choose_action(id=p4)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "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"
}
Qwen3 SportmcpKeep hand
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "no"
}
Qwen3 SportmcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Opus Minimalllm
pass_priority()
{
  "actions_passed": 2,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(20hp), Opus Minimal(you,20hp)",
  "context": "T1 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play spells and abilities",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "land",
      "id": "p3"
    },
    {
      "name": "Sunbillow Verge",
      "index": 1,
      "action": "land",
      "id": "p4"
    },
    {
      "name": "Cavern of Souls",
      "index": 2,
      "action": "land",
      "id": "p5"
    }
  ],
  "action_pending": true
}
Qwen3 SportmcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Qwen3 SportmcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingOpus Minimal
Let me check what these lands do before deciding which to play first.
llm
get_oracle_text(card_names=["Cavern of Souls","Maelstrom of the Spi...)
{
  "cards": [
    {
      "name": "Cavern of Souls",
      "rules": [
        "As {this} enters, choose a creature type.",
        "{T}: Add {C}.",
        "{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered."
      ],
      "type": "Land"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "rules": [
        "{T}: Add {C}.",
        "{T}: Add one mana of any color. Spend this mana only to cast a Dragon spell or an Omen spell.",
        "{4}, {T}, Sacrifice {this}: Search your library for a Dragon card, reveal it, put it into your hand, then shuffle."
      ],
      "type": "Land"
    },
    {
      "name": "Sunbillow Verge",
      "rules": [
        "{T}: Add {W}.",
        "{T}: Add {R}. Activate only if you control a Mountain or a Plains."
      ],
      "type": "Land"
    },
    {
      "mana_cost": "{W}",
      "name": "Momo, Friendly Flier",
      "rules": [
        "Flying",
        "The first non-Lemur creature spell with flying you cast during each of your turns costs {1} less to cast.",
        "Whenever another creature you control with flying enters, {this} gets +1/+1 until end of turn."
      ],
      "power": "1",
      "type": "Legendary Creature — Lemur Bat Ally",
      "toughness": "1"
    },
    {
      "mana_cost": "{1}{R}",
      "name": "Sarkhan, Dragon Ascendant",
      "rules": [
        "When {this} enters, you may pay behold a Dragon. If you do, create a Treasure token.",
        "Whenever a Dragon you control enters, put a +1/+1 counter on {this}. Until end of turn, {this} becomes a Dragon in addition to its other types and gains flying."
      ],
      "power": "2",
      "type": "Legendary Creature — Human Druid",
      "toughness": "2"
    },
    {
      "mana_cost": "{2}{R}{R}",
      "name": "Magmatic Hellkite",
      "rules": [
        "Flying",
        "When {this} enters, destroy target nonbasic land an opponent controls. Its controller searches their library for a basic land card, puts it onto the battlefield tapped with a stun counter on it, then shuffles."
      ],
      "power": "4",
      "type": "Creature — Dragon",
      "toughness": "5"
    }
  ],
  "success": true
}
thinkingOpus Minimal
This looks like a Dragons deck. Sunbillow Verge gives white mana right away, letting me cast Momo turn 1. Cavern of Souls on Dragons would be ideal for later. Let me play Sunbillow Verge and cast Momo.
Qwen3 Sportllm
get_oracle_text(card_names=["Sunbillow Verge","Cori Mountain Monast...)
{
  "cards": [
    {
      "name": "Sunbillow Verge",
      "rules": [
        "{T}: Add {W}.",
        "{T}: Add {R}. Activate only if you control a Mountain or a Plains."
      ],
      "type": "Land"
    },
    {
      "name": "Cori Mountain Monastery",
      "rules": [
        "{this} enters tapped unless you control a Plains or an Island.",
        "{T}: Add {R}.",
        "{3}{R}, {T}: Exile the top card of your library. Until the end of your next turn, you may play that card."
      ],
      "type": "Land"
    },
    {
      "name": "Restless Anchorage",
      "rules": [
        "{this} enters tapped.",
        "{T}: Add {W}.",
        "{T}: Add {U}.",
        "{1}{W}{U}: Until end of turn, {this} becomes a 2/3 white and blue Bird creature with flying. It's still a land.",
        "Whenever {this} attacks, create a Map token."
      ],
      "type": "Land"
    },
    {
      "name": "Hallowed Fountain",
      "rules": [
        "As {this} enters, you may pay 2 life. If you don't, it enters tapped.",
        "{T}: Add {W}.",
        "{T}: Add {U}."
      ],
      "type": "Land — Plains Island"
    }
  ],
  "success": true
}
Opus Minimalllm
choose_action(id=p4)
{
  "success": true,
  "action_taken": "selected_1"
}
Opus Minimalllm
get_action_choices()
{
  "action_pending": false
}
thinkingOpus Minimal
Hmm, no Momo available? Let me check — Sunbillow Verge only makes R if I control a Mountain or Plains. It makes W unconditionally. Let me pass priority to see what comes next.
Qwen3 SportmcpPlay Sunbillow Verge
raw
choose_action(id=p1)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}
Qwen3 SportmcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Qwen3 SportmcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Opus Minimalllm
pass_priority()
{
  "actions_passed": 3,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(20hp), Opus Minimal(you,20hp)",
  "context": "T2 Precombat Main/Precombat Main (Opus Minimal) YOUR_MAIN",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play spells and abilities",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "land",
      "id": "p3"
    },
    {
      "name": "Sunbillow Verge",
      "index": 1,
      "action": "land",
      "id": "p6"
    },
    {
      "name": "Sunbillow Verge",
      "index": 2,
      "action": "land",
      "id": "p4"
    },
    {
      "name": "Cavern of Souls",
      "index": 3,
      "action": "land",
      "id": "p5"
    }
  ],
  "action_pending": true
}
thinkingOpus Minimal
Wait — it seems like the land didn't get played last turn? I see two Sunbillow Verges now plus a new one. Ah, I drew a card. It's turn 2. Actually, on the play I didn't draw turn 1. Let me check the game state.
llm
get_game_state()
{
  "phase": "Precombat Main",
  "priority_player": "Opus Minimal",
  "cursor": 1,
  "stack": [],
  "active_player": "Opus Minimal",
  "players": [
    {
      "hand_size": 6,
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": false,
          "name": "Sunbillow Verge",
          "id": "p7"
        }
      ],
      "name": "Qwen3 Sport",
      "library_size": 52,
      "life": 20
    },
    {
      "hand_size": 8,
      "is_active": true,
      "is_you": true,
      "name": "Opus Minimal",
      "library_size": 47,
      "life": 20,
      "hand": [
        {
          "name": "Cavern of Souls",
          "is_land": true,
          "id": "p5",
          "playable": true
        },
        {
          "name": "Maelstrom of the Spirit Dragon",
          "is_land": true,
          "id": "p3",
          "playable": true
        },
        {
          "name": "Sunbillow Verge",
          "is_land": true,
          "id": "p4",
          "playable": true
        },
        {
          "mana_cost": "{2}{R}{R}",
          "name": "Magmatic Hellkite",
          "id": "p8",
          "power": "4",
          "toughness": "5"
        },
        {
          "mana_cost": "{1}{R}",
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p9",
          "power": "2",
          "toughness": "2"
        },
        {
          "mana_cost": "{W}",
          "name": "Momo, Friendly Flier",
          "id": "p10",
          "power": "1",
          "toughness": "1"
        },
        {
          "mana_cost": "{W}",
          "name": "Momo, Friendly Flier",
          "id": "p11",
          "power": "1",
          "toughness": "1"
        },
        {
          "name": "Sunbillow Verge",
          "is_land": true,
          "id": "p6",
          "playable": true
        }
      ]
    }
  ],
  "available": true,
  "step": "Precombat Main",
  "turn": 2
}
Qwen3 SportmcpPass
raw
choose_action(answer=false)
{
  "success": true,
  "action_taken": "passed_priority"
}
thinkingOpus Minimal
OK so it's turn 2, I have 8 cards in hand (drew for turn), no lands on battlefield yet. Opponent played a Sunbillow Verge. The land play last turn apparently didn't stick or I was on the play and something happened. Let me check the log.
llm
get_game_log(since_turn=1)
{
  "cursor": 1968,
  "since_player": "Opus Minimal",
  "log": "Opus Minimal turn 1 (20 - 20)\nQwen3 Sport draws a card\nQwen3 Sport puts Sunbillow Verge from hand onto the Battlefield\nQwen3 Sport plays Sunbillow Verge\nQwen3 Sport skip attack\nQwen3 Sport turn 1 (20 - 20)\nOpus Minimal draws a card",
  "since_turn": 1,
  "truncated": false,
  "total_length": 1968
}
thinkingOpus Minimal
I see — my turn 1 was skipped. The opponent played first actually. Wait, it says "Opus Minimal turn 1" at the start but then the opponent drew and played. Actually looking at this more carefully: it seems like I chose to go first, but my turn 1 had no actions shown, then it went to opponent's turn, then back to my turn 2. OK, so I just didn't play a land on turn 1 somehow. Now it's my turn 2. I have 8 cards, 0 lands. I need to play a land. Let me play Cavern of Souls naming Dragons (for Magmatic Hellkite later), then I won't be able to cast Momo this turn from Cavern alone. Actually, let me think: - If I play Sunbillow Verge, I get W and can cast Momo turn 2. - Turn 3 I can play Cavern of Souls (Dragons) for colorless + Dragon mana, and play Sarkhan with Sunbillow (W) + Cavern (Dragon/colorless) — wait, Sarkhan costs {1}{R}. Sunbillow makes W or R (if I control Mountain/Plains). Sunbillow isn't a Mountain or Plains, so only W. I need R for Sarkhan. Let me think about Maelstrom: it makes C or any color for Dragons/Omens. Best plan: Play Sunbillow Verge now → cast Momo (W). Turn 3 play Maelstrom → tap for Dragon mana (R) + Sunbillow (W) to cast Sarkhan ({1}{R}). Turn 4 play Cavern (Dragons) → cast Magmatic Hellkite ({2}{R}{R}) using Maelstrom (R for Dragon) + Cavern (R for Dragon) + Sunbillow (W... no, need R). Hmm, Hellkite costs {2}{R}{R}. That's tricky. Let me reconsider. Actually, with Sunbillow + Maelstrom + Cavern: Sunbillow makes W (not R since no Mountain/Plains), Maelstrom makes R (for Dragon), Cavern makes R (for Dragon named type). That's W+R+R = only 3 mana for a 4-mana spell. I need 4 lands for Hellkite. By turn 4 I should have drawn another land hopefully. Let me just play optimally for now. Play Sunbillow Verge, cast Momo.
llm
choose_action(id=p4)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_2"
}
thinkingOpus Minimal
Cast Momo.
mcpCast Momo, Friendly Flier {W}
raw
choose_action(id=p10, auto_tap=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_1"
}
thinkingOpus Minimal
Momo is on the stack, no more plays. Pass priority.
mcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Opus Minimalllm
pass_priority(until=declare_attackers)
{
  "actions_passed": 2,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(20hp), Opus Minimal(you,20hp)",
  "context": "T2 Combat/Declare Attackers (Opus Minimal)",
  "stop_reason": "reached_step",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true,
  "current_step": "Declare Attackers"
}
thinkingOpus Minimal
Momo has summoning sickness. Skip attack.
llm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Qwen3 Sportllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,20hp), Opus Minimal(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 1,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 5,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T2 Precombat Main/Precombat Main (Qwen3 Sport) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Cori Mountain Monastery",
      "index": 0,
      "action": "land",
      "id": "p2"
    },
    {
      "name": "Restless Anchorage",
      "index": 1,
      "action": "land",
      "id": "p3"
    },
    {
      "name": "Hallowed Fountain",
      "index": 2,
      "action": "land",
      "id": "p8"
    },
    {
      "name": "Hallowed Fountain",
      "index": 3,
      "action": "land",
      "id": "p7"
    }
  ]
}
Qwen3 Sportllm
choose_action(id=p2)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}
Qwen3 SportmcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Opus Minimalllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(20hp), Opus Minimal(you,20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 1,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T3 Precombat Main/Precombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "land",
      "id": "p3"
    },
    {
      "mana_cost": "{W}",
      "name": "Momo, Friendly Flier",
      "index": 1,
      "action": "cast",
      "id": "p11",
      "power": "1",
      "toughness": "1"
    },
    {
      "name": "Sunbillow Verge",
      "index": 2,
      "action": "land",
      "id": "p6"
    },
    {
      "name": "Cavern of Souls",
      "index": 3,
      "action": "land",
      "id": "p5"
    },
    {
      "name": "Mountain",
      "index": 4,
      "action": "land",
      "id": "p12"
    }
  ]
}
thinkingOpus Minimal
Drew a Mountain! That changes things. Let me check the opponent's board first.
llm
get_game_state()
{
  "phase": "Precombat Main",
  "priority_player": "Opus Minimal",
  "cursor": 2,
  "stack": [],
  "active_player": "Opus Minimal",
  "players": [
    {
      "hand_size": 6,
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": false,
          "name": "Sunbillow Verge",
          "id": "p7"
        },
        {
          "tapped": true,
          "name": "Cori Mountain Monastery",
          "id": "p13"
        }
      ],
      "name": "Qwen3 Sport",
      "library_size": 51,
      "life": 20
    },
    {
      "hand_size": 7,
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Sunbillow Verge",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Momo, Friendly Flier",
          "id": "p10",
          "power": "1",
          "toughness": "1",
          "summoning_sick": false
        }
      ],
      "name": "Opus Minimal",
      "library_size": 46,
      "life": 20,
      "hand": [
        {
          "name": "Cavern of Souls",
          "is_land": true,
          "id": "p5",
          "playable": true
        },
        {
          "name": "Maelstrom of the Spirit Dragon",
          "is_land": true,
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{2}{R}{R}",
          "name": "Magmatic Hellkite",
          "id": "p8",
          "power": "4",
          "toughness": "5"
        },
        {
          "mana_cost": "{1}{R}",
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p9",
          "power": "2",
          "toughness": "2"
        },
        {
          "mana_cost": "{W}",
          "name": "Momo, Friendly Flier",
          "id": "p11",
          "power": "1",
          "toughness": "1",
          "playable": true
        },
        {
          "name": "Sunbillow Verge",
          "is_land": true,
          "id": "p6",
          "playable": true
        },
        {
          "name": "Mountain",
          "is_land": true,
          "id": "p12",
          "playable": true
        }
      ]
    }
  ],
  "available": true,
  "step": "Precombat Main",
  "turn": 3
}
thinkingOpus Minimal
OK, turn 3. I have Sunbillow Verge + Momo on board. I have a Mountain in hand now. Let me plan: With Mountain in play, Sunbillow Verge can now make R (since Mountain is a Mountain). So: - Play Mountain → Sunbillow (W or R) + Mountain (R) = 2 mana. Cast Sarkhan ({1}{R}) using Mountain for R and Sunbillow for 1. - But I also want to cast the second Momo. Momo costs W. If I tap Sunbillow for W to cast Momo, I only have Mountain (R) left — can't cast Sarkhan. Best line: Play Mountain, cast Sarkhan ({1}{R}) using Sunbillow for generic and Mountain for R. Then attack with Momo for 1 in the air. Actually wait — Sarkhan has "behold a Dragon" ETB. I have Magmatic Hellkite in hand, which is a Dragon. Let me check what "behold" means.
llm
get_oracle_text(card_name=Sarkhan, Dragon Ascendant)
{
  "success": true,
  "mana_cost": "{1}{R}",
  "name": "Sarkhan, Dragon Ascendant",
  "rules": [
    "When {this} enters, you may pay behold a Dragon. If you do, create a Treasure token.",
    "Whenever a Dragon you control enters, put a +1/+1 counter on {this}. Until end of turn, {this} becomes a Dragon in addition to its other types and gains flying."
  ],
  "power": "2",
  "type": "Legendary Creature — Human Druid",
  "toughness": "2"
}
thinkingOpus Minimal
"Behold a Dragon" — I think behold means revealing a Dragon from hand. So I reveal Magmatic Hellkite and get a Treasure token. That's excellent — ramps me toward Hellkite. Play Mountain, cast Sarkhan.
llm
choose_action(id=p12)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_4"
}
thinkingOpus Minimal
Cast Sarkhan. Tap Mountain for R, Sunbillow for generic.
mcpCast Sarkhan, Dragon Ascendant {1}{R}
raw
choose_action(id=p9, mana_plan=["p4","p12"])
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_1",
  "mana_plan_set": true,
  "mana_plan_size": 2
}
Opus Minimalllm
pass_priority(until=stack_resolved)
{
  "actions_passed": 2,
  "land_drops_used": 1,
  "stack": [
    {
      "name": "Ability"
    }
  ],
  "action_type": "GAME_ASK",
  "players": "Qwen3 Sport(20hp), Opus Minimal(you,20hp)",
  "context": "T3 Precombat Main/Precombat Main (Opus Minimal) YOUR_MAIN",
  "stop_reason": "non_priority_action",
  "response_type": "boolean",
  "respond_with": "answer=true or answer=false",
  "message": "Pay behold a Dragon and create a Treasure token?",
  "action_pending": true
}
thinkingOpus Minimal
Yes, behold the Hellkite for a Treasure.
llm
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "yes"
}
thinkingOpus Minimal
Reveal Magmatic Hellkite.
mcpMagmatic Hellkite
raw
choose_action(id=p8)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "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"
}
Opus Minimalllm
pass_priority(until=declare_attackers)
{
  "stack": [
    {
      "name": "Ability"
    }
  ],
  "action_type": "GAME_TARGET",
  "players": "Qwen3 Sport(20hp), Opus Minimal(you,20hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "can_cancel": true,
  "message": "Select a Dragon card",
  "required": false,
  "action_pending": true,
  "actions_passed": 0,
  "land_drops_used": 1,
  "context": "T3 Precombat Main/Precombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N, or answer=false to cancel",
  "choices": [
    {
      "name": "Cavern of Souls",
      "target_type": "card",
      "index": 0,
      "id": "p5"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "target_type": "card",
      "index": 1,
      "id": "p3"
    },
    {
      "name": "Magmatic Hellkite",
      "target_type": "card",
      "index": 2,
      "id": "p8"
    },
    {
      "name": "Momo, Friendly Flier",
      "target_type": "card",
      "index": 3,
      "id": "p11"
    },
    {
      "name": "Sunbillow Verge",
      "target_type": "card",
      "index": 4,
      "id": "p6"
    }
  ]
}
thinkingOpus Minimal
Hmm, it's asking again to select a Dragon card. Maybe it wants me to reveal it again or this is a different prompt. Let me select Magmatic Hellkite again.
llm
choose_action(id=p8)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "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"
}
thinkingOpus Minimal
Seems like it's looping. Maybe I should cancel since it's optional, or maybe I need to confirm differently. Let me cancel and see if the treasure still gets created. Actually wait — "behold" might mean revealing from hand. The target selection IS the reveal. But it keeps asking. Let me try canceling.
mcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "cancelled"
}
Opus Minimalllm
pass_priority(until=declare_attackers)
{
  "combat_phase": "attackers",
  "actions_passed": 1,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(20hp), Opus Minimal(you,20hp)",
  "context": "T3 Combat/Declare Attackers (Opus Minimal)",
  "stop_reason": "combat",
  "response_type": "select",
  "respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
  "message": "Select attackers",
  "choices": [
    {
      "name": "Momo, Friendly Flier",
      "index": 0,
      "choice_type": "attacker",
      "id": "p10",
      "power": "1",
      "toughness": "1"
    },
    {
      "name": "All attack",
      "index": 1,
      "choice_type": "special",
      "id": "all"
    }
  ],
  "action_pending": true
}
thinkingOpus Minimal
Momo has flying — attack for 1. Sarkhan has summoning sickness.
llm
choose_action(attackers=["p10"])
{
  "declared": [
    "p10"
  ],
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "batch_attack"
}
Opus Minimalllm
pass_priority(until=postcombat_main)
{
  "actions_passed": 3,
  "land_drops_used": 1,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(19hp), Opus Minimal(you,20hp)",
  "context": "T3 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "stop_reason": "reached_step",
  "response_type": "select",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play spells and abilities",
  "choices": [
    {
      "mana_cost": "{W}",
      "name": "Momo, Friendly Flier",
      "index": 0,
      "action": "cast",
      "id": "p11",
      "power": "1",
      "toughness": "1"
    }
  ],
  "action_pending": true,
  "current_step": "Postcombat Main"
}
thinkingOpus Minimal
Momo hit for 1. Opponent at 19. I could cast the second Momo but my lands are tapped. Wait, it's showing Momo as playable — let me check. Do I have a Treasure token from Sarkhan?
llm
get_game_state()
{
  "phase": "Postcombat Main",
  "priority_player": "Opus Minimal",
  "cursor": 4,
  "stack": [],
  "active_player": "Opus Minimal",
  "players": [
    {
      "hand_size": 6,
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": false,
          "name": "Sunbillow Verge",
          "id": "p7"
        },
        {
          "tapped": true,
          "name": "Cori Mountain Monastery",
          "id": "p13"
        }
      ],
      "name": "Qwen3 Sport",
      "library_size": 51,
      "life": 19
    },
    {
      "hand_size": 5,
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": true,
          "name": "Sunbillow Verge",
          "id": "p4"
        },
        {
          "tapped": true,
          "name": "Momo, Friendly Flier",
          "id": "p10",
          "power": "1",
          "toughness": "1",
          "summoning_sick": false
        },
        {
          "tapped": true,
          "name": "Mountain",
          "id": "p12"
        },
        {
          "tapped": false,
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p9",
          "power": "2",
          "toughness": "2",
          "summoning_sick": true
        },
        {
          "tapped": false,
          "name": "Treasure Token",
          "rules": [
            "{T}, Sacrifice this artifact: Add one mana of any color."
          ],
          "id": "p15",
          "token": true
        }
      ],
      "name": "Opus Minimal",
      "library_size": 46,
      "life": 20,
      "hand": [
        {
          "name": "Cavern of Souls",
          "is_land": true,
          "id": "p5"
        },
        {
          "name": "Maelstrom of the Spirit Dragon",
          "is_land": true,
          "id": "p3"
        },
        {
          "mana_cost": "{2}{R}{R}",
          "name": "Magmatic Hellkite",
          "id": "p8",
          "power": "4",
          "toughness": "5"
        },
        {
          "mana_cost": "{W}",
          "name": "Momo, Friendly Flier",
          "id": "p11",
          "power": "1",
          "toughness": "1",
          "playable": true
        },
        {
          "name": "Sunbillow Verge",
          "is_land": true,
          "id": "p6"
        }
      ]
    }
  ],
  "available": true,
  "step": "Postcombat Main",
  "turn": 3
}
thinkingOpus Minimal
I got the Treasure token! And I cancelled the second reveal — probably the behold worked on the first select and the second prompt was something else. Anyway, I have an untapped Treasure token. I can sacrifice it for W to cast Momo #2. Two flying 1/1s is good pressure.
llm
choose_action(id=p11, mana_plan=["p15"])
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0",
  "mana_plan_set": true,
  "mana_plan_size": 1
}
Opus Minimalllm
pass_priority(until=end_of_turn)
{
  "action_type": "GAME_TARGET",
  "players": "Qwen3 Sport(19hp), Opus Minimal(you,20hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "can_cancel": false,
  "message": "Select a Momo, Friendly Flier to keep (Legendary Rule)?",
  "required": true,
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 1,
  "context": "T3 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N",
  "choices": [
    {
      "tapped": true,
      "name": "Momo, Friendly Flier",
      "target_type": "permanent",
      "index": 0,
      "id": "p10",
      "power": "1",
      "toughness": "1"
    },
    {
      "name": "Momo, Friendly Flier",
      "target_type": "permanent",
      "index": 1,
      "id": "p11",
      "power": "1",
      "toughness": "1"
    }
  ]
}
thinkingOpus Minimal
Legendary rule! Momo is legendary. I need to keep one. Keep the untapped new one since the old one is tapped.
llm
choose_action(id=p11)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "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"
}
thinkingOpus Minimal
That was a waste of the Treasure — Momo is legendary. Lesson learned. Let me check what Momo does when it enters/dies.
llm
get_oracle_text(card_name=Momo, Friendly Flier)
{
  "success": true,
  "mana_cost": "{W}",
  "name": "Momo, Friendly Flier",
  "rules": [
    "Flying",
    "The first non-Lemur creature spell with flying you cast during each of your turns costs {1} less to cast.",
    "Whenever another creature you control with flying enters, {this} gets +1/+1 until end of turn."
  ],
  "power": "1",
  "type": "Legendary Creature — Lemur Bat Ally",
  "toughness": "1"
}
thinkingOpus Minimal
Ah, Momo makes my first flying non-Lemur spell cost {1} less! That's actually great for Magmatic Hellkite — it would cost {1}{R}{R} instead of {2}{R}{R}. But I wasted the Treasure. Still, at least the old Momo dying doesn't lose anything and the new one is untapped for blocking.
mcpsend_chat_message
raw
send_chat_message(message=Legendary. Noted.)
{
  "success": true
}
Qwen3 Sportllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,19hp), Opus Minimal(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 12,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T3 Precombat Main/Precombat Main (Qwen3 Sport) YOUR_MAIN",
  "recent_chat": [
    "Opus Minimal: Legendary. Noted."
  ],
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Restless Anchorage",
      "index": 0,
      "action": "land",
      "id": "p3"
    },
    {
      "name": "Hallowed Fountain",
      "index": 1,
      "action": "land",
      "id": "p8"
    },
    {
      "mana_cost": "{1}{W}",
      "name": "Get Lost",
      "index": 2,
      "action": "cast",
      "id": "p6"
    },
    {
      "name": "Hallowed Fountain",
      "index": 3,
      "action": "land",
      "id": "p7"
    }
  ]
}
Qwen3 Sportllm
choose_action(id=p8)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_1"
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "no"
}
Qwen3 Sportllm
get_oracle_text(card_name=Get Lost)
{
  "success": true,
  "mana_cost": "{1}{W}",
  "name": "Get Lost",
  "rules": [
    "Destroy target creature, enchantment, or planeswalker. Its controller creates two Map tokens."
  ],
  "type": "Instant"
}
Qwen3 SportmcpCast Get Lost {1}{W}
raw
choose_action(id=p6)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}
Qwen3 SportmcpSarkhan, Dragon Ascendant
raw
choose_action(id=p14)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "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"
}
Qwen3 Sportllm
choose_action(index=0)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_ability_0"
}
Qwen3 SportmcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Opus Minimalllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(19hp), Opus Minimal(you,20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T4 Precombat Main/Precombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{1}{R}",
      "name": "Sarkhan, Dragon Ascendant",
      "index": 0,
      "action": "cast",
      "id": "p18",
      "power": "2",
      "toughness": "2"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 1,
      "action": "land",
      "id": "p3"
    },
    {
      "name": "Sunbillow Verge",
      "index": 2,
      "action": "land",
      "id": "p6"
    },
    {
      "name": "Map Token",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{1}, {T}, Sacrifice this artifact: Target creatur..."
      ],
      "id": "p19"
    },
    {
      "name": "Cavern of Souls",
      "index": 4,
      "action": "land",
      "id": "p5"
    },
    {
      "name": "Map Token",
      "index": 5,
      "action": "activate",
      "playable_abilities": [
        "{1}, {T}, Sacrifice this artifact: Target creatur..."
      ],
      "id": "p20"
    }
  ]
}
thinkingOpus Minimal
Turn 4! I drew another Sarkhan (p18), and I have Map tokens (from Momo dying, I assume). I have 2 untapped lands (Mountain + Sunbillow). Let me think about sequencing. My hand: Cavern of Souls, Maelstrom of the Spirit Dragon, Magmatic Hellkite, Sunbillow Verge, Sarkhan #2. Battlefield: Mountain (untapped), Sunbillow Verge (untapped), Momo, Sarkhan #1, 2 Map tokens. Plan: Play Maelstrom of the Spirit Dragon (makes any color for Dragons). Then I have Mountain + Sunbillow + Maelstrom = 3 lands. With Momo's cost reduction, Hellkite costs {1}{R}{R}. Maelstrom (R for Dragon) + Mountain (R) + Sunbillow (generic) = {1}{R}{R}. Cast Hellkite! When Hellkite enters, Sarkhan gets a +1/+1 counter and becomes a flying Dragon. And Momo gets +1/+1 until end of turn from another flying creature entering. Let's do it.
llm
choose_action(id=p3)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_1"
}
thinkingOpus Minimal
Hellkite is castable! 3 untapped lands and Momo's reduction makes it {1}{R}{R}. Cast it.
mcpCast Magmatic Hellkite {2}{R}{R}
raw
choose_action(id=p8, mana_plan=["p4","p3","p12"])
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_2",
  "mana_plan_set": true,
  "mana_plan_size": 3
}
Opus Minimalllm
pass_priority(until=stack_resolved)
{
  "combat_phase": "attackers",
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(19hp), Opus Minimal(you,20hp)",
  "stop_reason": "combat",
  "response_type": "select",
  "untapped_lands": 3,
  "message": "Select attackers",
  "action_pending": true,
  "actions_passed": 1,
  "context": "T4 Combat/Declare Attackers (Opus Minimal)",
  "recent_chat": [
    "[System] Spell cancelled — mana plan was incorrect or incomplete."
  ],
  "respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
  "choices": [
    {
      "name": "Momo, Friendly Flier",
      "index": 0,
      "choice_type": "attacker",
      "id": "p11",
      "power": "1",
      "toughness": "1"
    },
    {
      "name": "All attack",
      "index": 1,
      "choice_type": "special",
      "id": "all"
    }
  ]
}
thinkingOpus Minimal
Spell cancelled — mana plan was wrong. Maelstrom must need a different tap. Let me check what Maelstrom does.
llm
get_oracle_text(card_name=Maelstrom of the Spirit Dragon)
{
  "success": true,
  "name": "Maelstrom of the Spirit Dragon",
  "rules": [
    "{T}: Add {C}.",
    "{T}: Add one mana of any color. Spend this mana only to cast a Dragon spell or an Omen spell.",
    "{4}, {T}, Sacrifice {this}: Search your library for a Dragon card, reveal it, put it into your hand, then shuffle."
  ],
  "type": "Land"
}
thinkingOpus Minimal
Maelstrom has two abilities — {T}: Add {C} (index 0) and {T}: Add any color for Dragons (index 1). I needed to use p3:1 for the colored mana. My mana plan should have been ["p4", "p3:1", "p12"] to get Sunbillow(1) + Maelstrom(R for Dragon) + Mountain(R) = {1}{R}{R}. I'm in combat now, can't cast it. Let me just attack with Momo and try again post-combat.
llm
choose_action(attackers=["p11"])
{
  "declared": [
    "p11"
  ],
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "batch_attack"
}
Opus Minimalllm
pass_priority(until=postcombat_main)
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(18hp), Opus Minimal(you,20hp)",
  "stop_reason": "reached_step",
  "response_type": "select",
  "untapped_lands": 3,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 3,
  "land_drops_used": 1,
  "context": "T4 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{1}{R}",
      "name": "Sarkhan, Dragon Ascendant",
      "index": 0,
      "action": "cast",
      "id": "p18",
      "power": "2",
      "toughness": "2"
    },
    {
      "name": "Map Token",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{1}, {T}, Sacrifice this artifact: Target creatur..."
      ],
      "id": "p19"
    },
    {
      "name": "Map Token",
      "index": 2,
      "action": "activate",
      "playable_abilities": [
        "{1}, {T}, Sacrifice this artifact: Target creatur..."
      ],
      "id": "p20"
    }
  ],
  "current_step": "Postcombat Main"
}
thinkingOpus Minimal
Hellkite not showing as playable? Wait — Momo's reduction only works "The first non-Lemur creature spell with flying you cast during each of your turns." Since Momo attacked and is tapped, but still on battlefield. And I haven't cast a flying spell yet this turn. But Hellkite costs {2}{R}{R} reduced by {1} = {1}{R}{R}. I have 3 untapped lands — but maybe it's not showing because the mana colors don't work? Sunbillow Verge needs a Mountain/Plains to make R/W. Mountain is untapped. So Sunbillow can make R (with Mountain in play). Maelstrom can make R for Dragons (ability index 1). Mountain makes R. So I'd have R+R+R but need {1}{R}{R}. That works — any R can pay for the {1}. Hmm, but Hellkite isn't in the choices. Maybe the reduction doesn't apply or maybe it needs {2}{R}{R} which is 4 mana and I only have 3 lands. Let me just cast the second Sarkhan and build more board presence.
llm
choose_action(id=p18, mana_plan=["p4","p12"])
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0",
  "mana_plan_set": true,
  "mana_plan_size": 2
}
Opus Minimalllm
pass_priority(until=stack_resolved)
{
  "actions_passed": 2,
  "land_drops_used": 1,
  "stack": [
    {
      "name": "Ability"
    }
  ],
  "action_type": "GAME_ASK",
  "players": "Qwen3 Sport(18hp), Opus Minimal(you,20hp)",
  "context": "T4 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "stop_reason": "non_priority_action",
  "response_type": "boolean",
  "untapped_lands": 1,
  "respond_with": "answer=true or answer=false",
  "message": "Pay behold a Dragon and create a Treasure token?",
  "action_pending": true
}
thinkingOpus Minimal
Sarkhan #2 resolves — behold a Dragon again! Reveal Hellkite for another Treasure.
llm
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "yes"
}
Opus MinimalmcpMagmatic Hellkite
raw
choose_action(id=p8)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "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"
}
thinkingOpus Minimal
It's asking for another target again — same thing as last time. This time I won't cancel, let me see what it wants.
thinkingOpus Minimal
It's repeating. This must be for Sarkhan #1 also triggering — wait, no. Sarkhan #1 is already on the battlefield, it only triggers on ETB. Unless the legendary rule forces me to sacrifice one Sarkhan too!
llm
get_oracle_text(card_name=Sarkhan, Dragon Ascendant)
{
  "success": true,
  "mana_cost": "{1}{R}",
  "name": "Sarkhan, Dragon Ascendant",
  "rules": [
    "When {this} enters, you may pay behold a Dragon. If you do, create a Treasure token.",
    "Whenever a Dragon you control enters, put a +1/+1 counter on {this}. Until end of turn, {this} becomes a Dragon in addition to its other types and gains flying."
  ],
  "power": "2",
  "type": "Legendary Creature — Human Druid",
  "toughness": "2"
}
thinkingOpus Minimal
Sarkhan is legendary too! So I'll have to sacrifice one. But first let me handle this behold prompt. It keeps showing "Select a Dragon card" — maybe it's asking me to reveal the second card. I'll cancel since I already revealed one.
mcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "cancelled"
}
thinkingOpus Minimal
No legendary rule trigger? Let me check the board.
llm
get_game_state()
{
  "phase": "Postcombat Main",
  "priority_player": "Opus Minimal",
  "cursor": 9,
  "stack": [],
  "active_player": "Opus Minimal",
  "players": [
    {
      "hand_size": 5,
      "graveyard": [
        {
          "name": "Get Lost",
          "id": "p22"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Sunbillow Verge",
          "id": "p7"
        },
        {
          "tapped": true,
          "name": "Cori Mountain Monastery",
          "id": "p13"
        },
        {
          "tapped": true,
          "name": "Hallowed Fountain",
          "id": "p21"
        }
      ],
      "name": "Qwen3 Sport",
      "library_size": 50,
      "life": 18
    },
    {
      "hand_size": 3,
      "graveyard": [
        {
          "name": "Momo, Friendly Flier",
          "id": "p10"
        },
        {
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p9"
        }
      ],
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": true,
          "name": "Sunbillow Verge",
          "id": "p4"
        },
        {
          "tapped": true,
          "name": "Mountain",
          "id": "p12"
        },
        {
          "tapped": true,
          "name": "Momo, Friendly Flier",
          "id": "p11",
          "power": "1",
          "toughness": "1",
          "summoning_sick": false
        },
        {
          "tapped": false,
          "name": "Map Token",
          "rules": [
            "{1}, {T}, Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery."
          ],
          "id": "p20",
          "token": true
        },
        {
          "tapped": false,
          "name": "Map Token",
          "rules": [
            "{1}, {T}, Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery."
          ],
          "id": "p19",
          "token": true
        },
        {
          "tapped": false,
          "name": "Maelstrom of the Spirit Dragon",
          "id": "p3"
        },
        {
          "tapped": false,
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p18",
          "power": "2",
          "toughness": "2",
          "summoning_sick": true
        },
        {
          "tapped": false,
          "name": "Treasure Token",
          "rules": [
            "{T}, Sacrifice this artifact: Add one mana of any color."
          ],
          "id": "p25",
          "token": true
        }
      ],
      "name": "Opus Minimal",
      "library_size": 45,
      "life": 20,
      "hand": [
        {
          "name": "Cavern of Souls",
          "is_land": true,
          "id": "p5"
        },
        {
          "mana_cost": "{2}{R}{R}",
          "name": "Magmatic Hellkite",
          "id": "p8",
          "power": "4",
          "toughness": "5"
        },
        {
          "name": "Sunbillow Verge",
          "is_land": true,
          "id": "p6"
        }
      ]
    }
  ],
  "available": true,
  "step": "Postcombat Main",
  "turn": 4
}
thinkingOpus Minimal
Sarkhan #1 (p9) went to graveyard from legendary rule. Sarkhan #2 (p18) is on board. I have a Treasure token (p25) from the behold. Good. I have Maelstrom (untapped) + Treasure (untapped) = 2 mana sources + 2 Map tokens. Can I use a Map token to explore? It costs {1}, {T}, Sacrifice. I have Maelstrom for the {1}. Let me use a Map to explore Sarkhan or Momo. Actually, exploring could find me a land or buff a creature. With Sarkhan, if I reveal a non-land, he gets a +1/+1 counter becoming 3/3. That's solid.
mcpActivate Map Token
raw
choose_action(id=p19, mana_plan=["p3"])
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0",
  "mana_plan_set": true,
  "mana_plan_size": 1
}
thinkingOpus Minimal
Explore with Sarkhan — he's the better target for a +1/+1 counter.
mcpSarkhan, Dragon Ascendant
raw
choose_action(id=p18)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "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"
}
Opus Minimalllm
pass_priority(until=stack_resolved)
{
  "actions_passed": 1,
  "land_drops_used": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(18hp), Opus Minimal(you,20hp)",
  "context": "T4 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play spells and abilities",
  "choices": [
    {
      "name": "Map Token",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{1}, {T}, Sacrifice this artifact: Target creatur..."
      ],
      "id": "p20"
    }
  ],
  "action_pending": true
}
thinkingOpus Minimal
Explore resolved. I can use the second Map token too — Treasure is still untapped. Let me explore again with Sarkhan or Momo.
llm
choose_action(id=p20, mana_plan=["p25"])
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0",
  "mana_plan_set": true,
  "mana_plan_size": 1
}
Opus MinimalmcpSarkhan, Dragon Ascendant
raw
choose_action(id=p18)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "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"
}
Qwen3 Sportllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,18hp), Opus Minimal(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 3,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 12,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T4 Precombat Main/Precombat Main (Qwen3 Sport) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Restless Anchorage",
      "index": 0,
      "action": "land",
      "id": "p3"
    },
    {
      "name": "Steam Vents",
      "index": 1,
      "action": "land",
      "id": "p17"
    },
    {
      "name": "Hallowed Fountain",
      "index": 2,
      "action": "land",
      "id": "p7"
    }
  ]
}
Qwen3 Sportllm
choose_action(id=p17)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_1"
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "no"
}
Qwen3 SportmcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Opus Minimalllm
pass_priority(until=stack_resolved)
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(18hp), Opus Minimal(you,20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 3,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 5,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T5 Precombat Main/Precombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Mountain",
      "index": 0,
      "action": "land",
      "id": "p29"
    },
    {
      "name": "Sunbillow Verge",
      "index": 1,
      "action": "land",
      "id": "p6"
    },
    {
      "name": "Mountain",
      "index": 2,
      "action": "land",
      "id": "p27"
    },
    {
      "name": "Inspiring Vantage",
      "index": 3,
      "action": "land",
      "id": "p30"
    },
    {
      "name": "Cavern of Souls",
      "index": 4,
      "action": "land",
      "id": "p5"
    },
    {
      "mana_cost": "{2}{R}{R}",
      "name": "Magmatic Hellkite",
      "index": 5,
      "action": "cast",
      "id": "p8",
      "power": "4",
      "toughness": "5"
    }
  ]
}
thinkingOpus Minimal
Turn 5! I drew extra cards from exploring. I have Mountains, Inspiring Vantage, Cavern of Souls, and Hellkite is castable! Let me play Cavern of Souls first (naming Dragon), then cast Hellkite. With Momo's reduction, Hellkite costs {1}{R}{R}. I have Sunbillow Verge (tapped from previous turn?), Maelstrom, and... let me think about which land to play. Actually, Hellkite is already showing as castable. Let me play Cavern of Souls naming Dragon — it enters untapped and can tap for colorless or for Dragon mana. That gives me 4 untapped lands. Wait, let me count untapped lands: says 3 untapped. Let me play Cavern first.
llm
choose_action(id=p5)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_CHOICE",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_4"
}
Opus MinimalmcpPass
raw
choose_action(text=Dragon)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_choice_text_Dragon"
}
thinkingOpus Minimal
Now cast Hellkite. With Momo's reduction, it costs {1}{R}{R}. I have Maelstrom (R for Dragon), Cavern of Souls (any color for Dragon), Sunbillow Verge (R), Mountain... 4 untapped lands.
thinkingOpus Minimal
Cast Hellkite! Let me plan mana carefully. Momo reduces by {1}, so {1}{R}{R}. I'll use Cavern (any color for Dragon = R), Maelstrom (R for Dragon via ability :1), and Mountain or Sunbillow for generic. Wait — does Momo's reduction actually apply? Let me check. Momo reduces "the first non-Lemur creature spell with flying." Hellkite has flying and isn't a Lemur. This should be the first such spell this turn.
llm
get_oracle_text(object_id=p11)
{
  "success": true,
  "mana_cost": "{W}",
  "name": "Momo, Friendly Flier",
  "rules": [
    "Flying",
    "The first non-Lemur creature spell with flying you cast during each of your turns costs {1} less to cast.",
    "Whenever another creature you control with flying enters, {this} gets +1/+1 until end of turn.",
    ": ",
    "ICON_GOODYou haven't cast a non-Lemur creature spell with flying during your turn yet"
  ],
  "power": "1",
  "type": "Legendary Creature  - Lemur Bat Ally",
  "toughness": "1"
}
thinkingOpus Minimal
Good — the ICON_GOOD confirms I haven't used the reduction yet. So Hellkite costs {1}{R}{R} with 4 untapped lands.
mcpCast Magmatic Hellkite {2}{R}{R}
raw
choose_action(id=p8, mana_plan=["p3:1","p5","p4"])
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_1",
  "mana_plan_set": true,
  "mana_plan_size": 3
}
Opus Minimalllm
pass_priority(until=stack_resolved)
{
  "combat_phase": "attackers",
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(18hp), Opus Minimal(you,20hp)",
  "stop_reason": "combat",
  "response_type": "select",
  "untapped_lands": 4,
  "message": "Select attackers",
  "action_pending": true,
  "actions_passed": 1,
  "context": "T5 Combat/Declare Attackers (Opus Minimal)",
  "recent_chat": [
    "[System] Spell cancelled — mana plan was incorrect or incomplete."
  ],
  "respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
  "choices": [
    {
      "name": "Momo, Friendly Flier",
      "index": 0,
      "choice_type": "attacker",
      "id": "p11",
      "power": "1",
      "toughness": "1"
    },
    {
      "name": "Sarkhan, Dragon Ascendant",
      "index": 1,
      "choice_type": "attacker",
      "id": "p18",
      "power": "2",
      "toughness": "2"
    },
    {
      "name": "All attack",
      "index": 2,
      "choice_type": "special",
      "id": "all"
    }
  ]
}
thinkingOpus Minimal
Mana plan failed again! Cavern of Souls must work differently. Let me check what went wrong. Maybe Sunbillow Verge (p4) needs to check for a Plains/Mountain first.
llm
get_oracle_text(object_ids=["p4","p5"])
{
  "cards": [
    {
      "name": "Sunbillow Verge",
      "rules": [
        "{T}: Add {W}.",
        "{T}: Add {R}. Activate only if you control a Mountain or a Plains.",
        ": ",
        "ICON_GOODYou control a Mountain or a Plains"
      ],
      "type": "Land",
      "object_id": "p4"
    },
    {
      "name": "Cavern of Souls",
      "rules": [
        "As {this} enters, choose a creature type.",
        "{T}: Add {C}.",
        "{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.",
        "Chosen type: Dragon"
      ],
      "type": "Land",
      "object_id": "p5"
    }
  ],
  "success": true
}
thinkingOpus Minimal
OK so both should work. Cavern p5 ability :1 for any color Dragon. Maelstrom p3 ability :1 for any color Dragon. Sunbillow p4 for R. All three should give me {R}{R}+{R/any} = enough for {1}{R}{R}. But the spell was cancelled... maybe the issue is that Cavern:1 or Maelstrom:1 produces mana that can only be spent on Dragon spells, and the mana payment system can't handle spending it on generic costs? Or maybe it's a sequencing issue. Anyway, I'm in combat now. Let me attack with everything. Hellkite didn't resolve, so I only have Momo and Sarkhan.
mcpsend_chat_message
raw
send_chat_message(message=Mana. Always mana.)
{
  "success": true
}
Opus Minimalllm
choose_action(attackers=["all"])
{
  "declared": [
    "all"
  ],
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "batch_attack"
}
Opus Minimalllm
pass_priority(until=postcombat_main)
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(15hp), Opus Minimal(you,20hp)",
  "stop_reason": "reached_step",
  "response_type": "select",
  "untapped_lands": 4,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 3,
  "land_drops_used": 1,
  "context": "T5 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    }
  ],
  "current_step": "Postcombat Main"
}
thinkingOpus Minimal
Dealt 3 damage, opponent at 15. Hellkite isn't showing as playable anymore... Let me try with auto_tap this time. Wait, Hellkite isn't even in the choices. Maybe after combat Momo's reduction doesn't apply anymore since I already attacked? No, it says "during each of your turns." But I haven't cast it yet. Let me check my hand.
llm
get_game_state()
{
  "phase": "Postcombat Main",
  "priority_player": "Opus Minimal",
  "cursor": 14,
  "stack": [],
  "active_player": "Opus Minimal",
  "players": [
    {
      "hand_size": 5,
      "graveyard": [
        {
          "name": "Get Lost",
          "id": "p22"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": false,
          "name": "Sunbillow Verge",
          "id": "p7"
        },
        {
          "tapped": false,
          "name": "Cori Mountain Monastery",
          "id": "p13"
        },
        {
          "tapped": false,
          "name": "Hallowed Fountain",
          "id": "p21"
        },
        {
          "tapped": true,
          "name": "Steam Vents",
          "id": "p31"
        }
      ],
      "name": "Qwen3 Sport",
      "library_size": 49,
      "life": 15
    },
    {
      "hand_size": 5,
      "graveyard": [
        {
          "name": "Momo, Friendly Flier",
          "id": "p10"
        },
        {
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p9"
        }
      ],
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Sunbillow Verge",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Mountain",
          "id": "p12"
        },
        {
          "tapped": true,
          "name": "Momo, Friendly Flier",
          "id": "p11",
          "power": "1",
          "toughness": "1",
          "summoning_sick": false
        },
        {
          "tapped": false,
          "name": "Maelstrom of the Spirit Dragon",
          "id": "p3"
        },
        {
          "tapped": true,
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p18",
          "power": "2",
          "toughness": "2",
          "summoning_sick": false
        },
        {
          "tapped": false,
          "name": "Cavern of Souls",
          "id": "p5"
        }
      ],
      "name": "Opus Minimal",
      "library_size": 42,
      "life": 20,
      "hand": [
        {
          "mana_cost": "{2}{R}{R}",
          "name": "Magmatic Hellkite",
          "id": "p8",
          "power": "4",
          "toughness": "5",
          "playable": true
        },
        {
          "name": "Sunbillow Verge",
          "is_land": true,
          "id": "p6"
        },
        {
          "name": "Mountain",
          "is_land": true,
          "id": "p27"
        },
        {
          "name": "Inspiring Vantage",
          "is_land": true,
          "id": "p30"
        },
        {
          "name": "Mountain",
          "is_land": true,
          "id": "p29"
        }
      ]
    }
  ],
  "available": true,
  "step": "Postcombat Main",
  "turn": 5
}
thinkingOpus Minimal
Hellkite is marked playable=true! 4 untapped lands: Sunbillow (p4), Mountain (p12), Maelstrom (p3), Cavern (p5). With Momo's reduction: {1}{R}{R}. Let me try auto_tap this time since my manual plans keep failing.
llm
choose_action(id=p8, auto_tap=true)
{
  "retryable": true,
  "success": false,
  "error_code": "invalid_choice",
  "error": "Object p8 not found in current choices",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    }
  ]
}
thinkingOpus Minimal
Only Maelstrom's ability is available? Hellkite shows playable in hand but isn't in the action choices... Maybe postcombat main doesn't show Hellkite because Momo's reduction was already "used" (attempted) during precombat main? Or the system doesn't list it. Let me check if Momo's reduction is still active.
llm
get_oracle_text(object_id=p11)
{
  "success": true,
  "mana_cost": "{W}",
  "name": "Momo, Friendly Flier",
  "rules": [
    "Flying",
    "The first non-Lemur creature spell with flying you cast during each of your turns costs {1} less to cast.",
    "Whenever another creature you control with flying enters, {this} gets +1/+1 until end of turn.",
    ": ",
    "ICON_GOODYou haven't cast a non-Lemur creature spell with flying during your turn yet"
  ],
  "power": "1",
  "type": "Legendary Creature  - Lemur Bat Ally",
  "toughness": "1"
}
thinkingOpus Minimal
Still active! Hmm. The choices only show Maelstrom. Maybe I don't actually have enough mana? {2}{R}{R} costs 4 with reduction = 3. I have 4 untapped lands but one is Cavern (only for Dragon creatures via ability :1). So: - Cavern p5: {R} for Dragon (ability :1) ✓ - Maelstrom p3: {R} for Dragon (ability :1) ✓ - Mountain p12: {R} ✓ - Sunbillow p4: {W} or {R} ✓ That's 3 R sources + generic. Should be enough for {1}{R}{R}. The issue might be that it's not showing because the previous cancelled spell used Momo's cost-reduction tracking? Let me just pass and try next turn.
Qwen3 Sportllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,15hp), Opus Minimal(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 4,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 7,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T5 Precombat Main/Precombat Main (Qwen3 Sport) YOUR_MAIN",
  "recent_chat": [
    "Opus Minimal: Mana. Always mana."
  ],
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Restless Anchorage",
      "index": 0,
      "action": "land",
      "id": "p3"
    },
    {
      "name": "Cori Mountain Monastery",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{3}{R}, {T}: Exile the top card of your library. ..."
      ],
      "id": "p2"
    },
    {
      "mana_cost": "{2}{U}",
      "name": "Stock Up",
      "index": 2,
      "action": "cast",
      "id": "p20"
    },
    {
      "mana_cost": "{2}{W}{W}",
      "name": "Day of Judgment",
      "index": 3,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Hallowed Fountain",
      "index": 4,
      "action": "land",
      "id": "p7"
    }
  ]
}
Qwen3 Sportllm
get_oracle_text(card_name=Stock Up)
{
  "success": true,
  "mana_cost": "{2}{U}",
  "name": "Stock Up",
  "rules": [
    "Look at the top five cards of your library. Put two of them into your hand and the rest on the bottom of your library in any order."
  ],
  "type": "Sorcery"
}
Qwen3 Sportllm
get_oracle_text(card_name=Day of Judgment)
{
  "success": true,
  "mana_cost": "{2}{W}{W}",
  "name": "Day of Judgment",
  "rules": [
    "Destroy all creatures."
  ],
  "type": "Sorcery"
}
Qwen3 Sportllm
choose_action(id=p5)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_3"
}
Qwen3 Sportllm
choose_action(index=0)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_ability_0"
}
Opus Minimalllm
choose_action(answer=false)
{
  "success": true,
  "action_taken": "passed_priority"
}
Qwen3 SportmcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Qwen3 Sportllm
pass_priority()
{
  "actions_passed": 2,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,15hp), Opus Minimal(20hp)",
  "context": "T5 Postcombat Main/Postcombat Main (Qwen3 Sport) YOUR_MAIN",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play spells and abilities",
  "choices": [
    {
      "name": "Restless Anchorage",
      "index": 0,
      "action": "land",
      "id": "p3"
    },
    {
      "name": "Hallowed Fountain",
      "index": 1,
      "action": "land",
      "id": "p7"
    }
  ],
  "action_pending": true
}
Qwen3 Sportllm
choose_action(id=p7)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_1"
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "no"
}
Opus Minimalllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(15hp), Opus Minimal(you,20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 4,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T6 Precombat Main/Precombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Mountain",
      "index": 0,
      "action": "land",
      "id": "p29"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    },
    {
      "name": "Sunbillow Verge",
      "index": 2,
      "action": "land",
      "id": "p6"
    },
    {
      "name": "Mountain",
      "index": 3,
      "action": "land",
      "id": "p27"
    },
    {
      "name": "Inspiring Vantage",
      "index": 4,
      "action": "land",
      "id": "p30"
    },
    {
      "mana_cost": "{2}{R}{R}",
      "name": "Magmatic Hellkite",
      "index": 5,
      "action": "cast",
      "id": "p8",
      "power": "4",
      "toughness": "5"
    },
    {
      "mana_cost": "{1}{R}",
      "name": "Sarkhan, Dragon Ascendant",
      "index": 6,
      "action": "cast",
      "id": "p32",
      "power": "2",
      "toughness": "2"
    }
  ]
}
Qwen3 SportmcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingOpus Minimal
Turn 6! Drew Sarkhan. Hellkite is castable again. Let me play a land first (Mountain), then cast Hellkite with auto_tap.
llm
choose_action(id=p29)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingOpus Minimal
Now cast Hellkite. I have 5 untapped lands. Cost is {1}{R}{R} with Momo's reduction. Let me try a careful mana plan: Mountain (p12) for R, Mountain (p29) for R, Sunbillow (p4) for generic.
llm
choose_action(id=p8, mana_plan=["p12","p29","p4"])
{
  "retryable": true,
  "success": false,
  "error_code": "invalid_choice",
  "error": "Object p8 not found in current choices",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    }
  ]
}
thinkingOpus Minimal
Again not showing! But it was just listed. Let me check what happened.
llm
get_game_log(max_chars=500)
{
  "cursor": 15551,
  "log": "AA'>Qwen3 Sport skip attack\nQwen3 Sport puts Hallowed Fountain from hand onto the Battlefield\nQwen3 Sport plays Hallowed Fountain\nQwen3 Sport turn 5 (15 - 20)\nOpus Minimal draws a card\nOpus Minimal skip attack",
  "truncated": true,
  "total_length": 15551
}
thinkingOpus Minimal
Wait — "Opus Minimal skip attack"? That means the system already skipped my combat! But I wanted to play Hellkite first. It seems like when I played Mountain (p29), it auto-passed through to combat and skipped it. Let me check — am I actually in postcombat main now?
llm
get_game_state()
{
  "phase": "Combat",
  "priority_player": "Opus Minimal",
  "cursor": 15,
  "stack": [],
  "active_player": "Opus Minimal",
  "players": [
    {
      "hand_size": 4,
      "graveyard": [
        {
          "name": "Get Lost",
          "id": "p22"
        },
        {
          "name": "Day of Judgment",
          "id": "p34"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Sunbillow Verge",
          "id": "p7"
        },
        {
          "tapped": true,
          "name": "Cori Mountain Monastery",
          "id": "p13"
        },
        {
          "tapped": true,
          "name": "Hallowed Fountain",
          "id": "p21"
        },
        {
          "tapped": true,
          "name": "Steam Vents",
          "id": "p31"
        },
        {
          "tapped": true,
          "name": "Hallowed Fountain",
          "id": "p33"
        }
      ],
      "name": "Qwen3 Sport",
      "library_size": 48,
      "life": 15
    },
    {
      "hand_size": 6,
      "graveyard": [
        {
          "name": "Momo, Friendly Flier",
          "id": "p10"
        },
        {
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p9"
        },
        {
          "name": "Momo, Friendly Flier",
          "id": "p11"
        },
        {
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p18"
        }
      ],
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Sunbillow Verge",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Mountain",
          "id": "p12"
        },
        {
          "tapped": false,
          "name": "Maelstrom of the Spirit Dragon",
          "id": "p3"
        },
        {
          "tapped": false,
          "name": "Cavern of Souls",
          "id": "p5"
        }
      ],
      "name": "Opus Minimal",
      "library_size": 41,
      "life": 20,
      "hand": [
        {
          "mana_cost": "{2}{R}{R}",
          "name": "Magmatic Hellkite",
          "id": "p8",
          "power": "4",
          "toughness": "5"
        },
        {
          "name": "Sunbillow Verge",
          "is_land": true,
          "id": "p6"
        },
        {
          "name": "Mountain",
          "is_land": true,
          "id": "p27"
        },
        {
          "name": "Inspiring Vantage",
          "is_land": true,
          "id": "p30"
        },
        {
          "name": "Mountain",
          "is_land": true,
          "id": "p29"
        },
        {
          "mana_cost": "{1}{R}",
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p32",
          "power": "2",
          "toughness": "2"
        }
      ]
    }
  ],
  "available": true,
  "step": "Declare Attackers",
  "turn": 6
}
thinkingOpus Minimal
Day of Judgment was cast! My Momo and Sarkhan are in graveyard. Opponent wiped the board. I'm in combat declare attackers with no creatures. And I have 6 cards in hand, 4 lands on battlefield, no land drop used yet. Wait, p29 Mountain is still in hand. The land play must have been rolled back. Let me check — I have 4 untapped lands and 6 cards. The only action available is Maelstrom's activate. I can't attack with no creatures.
llm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingOpus Minimal
Postcombat main. Board was wiped by Day of Judgment. Time to rebuild. Play a Mountain, then cast Hellkite. Without Momo's reduction, Hellkite costs full {2}{R}{R} = 4 mana. I'll have 5 lands after playing Mountain.
mcpPlay Mountain
raw
choose_action(id=p29)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingOpus Minimal
Now cast Hellkite. 5 untapped lands: Mountain (p12), Mountain (p29), Sunbillow (p4), Maelstrom (p3), Cavern (p5). Cost {2}{R}{R}. Plan: p12 for R, p29 for R, p4 for W (generic), p3 for colorless (generic). Wait, Maelstrom ability :0 gives colorless? Let me check.
llm
get_oracle_text(object_id=p3)
{
  "success": true,
  "name": "Maelstrom of the Spirit Dragon",
  "rules": [
    "{T}: Add {C}.",
    "{T}: Add one mana of any color. Spend this mana only to cast a Dragon spell or an Omen spell.",
    "{4}, {T}, Sacrifice {this}: Search your library for a Dragon card, reveal it, put it into your hand, then shuffle."
  ],
  "type": "Land"
}
thinkingOpus Minimal
OK: Maelstrom :0 = {C}, :1 = any color for Dragon only. Cavern :0 = {C}, :1 = any color for Dragon. For {2}{R}{R}: p12 (R), p29 (R), p3:1 (R for Dragon), p5:0 (C for generic). That's R+R+R+C = works! Or simpler: p12 (R), p29 (R), p4 (W for generic), p3:0 (C for generic). That leaves Cavern untapped for Sarkhan next turn.
thinkingOpus Minimal
Good, 5 untapped. Cast Hellkite. Use p12 (R), p29 (R), p4 (W for generic), p3:0 (C for generic). Keep Cavern untapped.
mcpCast Magmatic Hellkite {2}{R}{R}
raw
choose_action(id=p8, mana_plan=["p12","p29","p4","p3"])
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_1",
  "mana_plan_set": true,
  "mana_plan_size": 4
}
Opus Minimalllm
pass_priority(until=stack_resolved)
{
  "stack": [
    {
      "name": "Ability"
    }
  ],
  "action_type": "GAME_TARGET",
  "players": "Qwen3 Sport(15hp), Opus Minimal(you,20hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "can_cancel": false,
  "untapped_lands": 1,
  "message": "Select a nonbasic land an opponent controls",
  "required": true,
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 1,
  "context": "T6 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N",
  "choices": [
    {
      "tapped": true,
      "controller": "Qwen3 Sport",
      "name": "Sunbillow Verge",
      "target_type": "permanent",
      "index": 0,
      "id": "p7"
    },
    {
      "tapped": true,
      "controller": "Qwen3 Sport",
      "name": "Hallowed Fountain",
      "target_type": "permanent",
      "index": 1,
      "id": "p21"
    },
    {
      "tapped": true,
      "controller": "Qwen3 Sport",
      "name": "Cori Mountain Monastery",
      "target_type": "permanent",
      "index": 2,
      "id": "p13"
    },
    {
      "tapped": true,
      "controller": "Qwen3 Sport",
      "name": "Hallowed Fountain",
      "target_type": "permanent",
      "index": 3,
      "id": "p33"
    },
    {
      "tapped": true,
      "controller": "Qwen3 Sport",
      "name": "Steam Vents",
      "target_type": "permanent",
      "index": 4,
      "id": "p31"
    }
  ]
}
thinkingOpus Minimal
Hellkite resolved! It has an ETB to target a nonbasic land opponent controls and create a Treasure. Let me pick their best land to tap down or whatever Hellkite does. Let me check.
llm
get_oracle_text(object_id=p8)
{
  "success": true,
  "mana_cost": "{2}{R}{R}",
  "name": "Magmatic Hellkite",
  "rules": [
    "Flying",
    "When {this} enters, destroy target nonbasic land an opponent controls. Its controller searches their library for a basic land card, puts it onto the battlefield tapped with a stun counter on it, then shuffles."
  ],
  "power": "4",
  "type": "Creature  - Dragon",
  "toughness": "5"
}
thinkingOpus Minimal
Destroy a nonbasic land! Excellent. Opponent has: Sunbillow Verge, Hallowed Fountain x2, Cori Mountain Monastery, Steam Vents. All nonbasic. Let me destroy Steam Vents — it provides both U and R, most versatile. Or Cori Mountain Monastery could have abilities.
llm
get_oracle_text(object_id=p13)
{
  "success": true,
  "name": "Cori Mountain Monastery",
  "rules": [
    "{this} enters tapped unless you control a Plains or an Island.",
    "{T}: Add {R}.",
    "{3}{R}, {T}: Exile the top card of your library. Until the end of your next turn, you may play that card.",
    ": ",
    "ICON_GOODYou control a Plains or an Island"
  ],
  "type": "Land"
}
thinkingOpus Minimal
Cori has card advantage ability. But Steam Vents is the only U+R source. Destroying Steam Vents cuts their color access more. All their other lands are W/R focused. Let me destroy Steam Vents to limit their blue.
llm
choose_action(id=p31)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_target_4"
}
Qwen3 Sportllm
pass_priority()
{
  "stack": [
    {
      "name": "Ability"
    }
  ],
  "action_type": "GAME_TARGET",
  "players": "Qwen3 Sport(you,15hp), Opus Minimal(20hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "can_cancel": true,
  "message": "Select a basic land card",
  "required": false,
  "action_pending": true,
  "actions_passed": 4,
  "context": "T6 Postcombat Main/Postcombat Main (Opus Minimal)",
  "respond_with": "id=\"pN\" or index=N, or answer=false to cancel",
  "choices": [
    {
      "name": "Island",
      "target_type": "card",
      "index": 0,
      "id": "p23"
    },
    {
      "name": "Island",
      "target_type": "card",
      "index": 1,
      "id": "p24"
    },
    {
      "name": "Plains",
      "target_type": "card",
      "index": 2,
      "id": "p25"
    },
    {
      "name": "Island",
      "target_type": "card",
      "index": 3,
      "id": "p26"
    }
  ]
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "cancelled"
}
Qwen3 Sportllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,15hp), Opus Minimal(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 4,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T6 Precombat Main/Precombat Main (Qwen3 Sport) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{2}{U}",
      "name": "Tishana's Tidebinder",
      "index": 0,
      "action": "cast",
      "id": "p29",
      "power": "3",
      "toughness": "2"
    },
    {
      "name": "Restless Anchorage",
      "index": 1,
      "action": "land",
      "id": "p3"
    },
    {
      "name": "Cori Mountain Monastery",
      "index": 2,
      "action": "activate",
      "playable_abilities": [
        "{3}{R}, {T}: Exile the top card of your library. ..."
      ],
      "id": "p2"
    },
    {
      "mana_cost": "{2}{U}",
      "name": "Stock Up",
      "index": 3,
      "action": "cast",
      "id": "p20"
    }
  ]
}
Qwen3 Sportllm
get_oracle_text(card_name=Tishana's Tidebinder)
{
  "success": true,
  "mana_cost": "{2}{U}",
  "name": "Tishana's Tidebinder",
  "rules": [
    "Flash",
    "When {this} enters, counter up to one target activated or triggered ability. If an ability of an artifact, creature, or planeswalker is countered this way, that permanent loses all abilities for as long as {this} remains on the battlefield."
  ],
  "power": "3",
  "type": "Creature — Merfolk Wizard",
  "toughness": "2"
}
Qwen3 Sportllm
choose_action(id=p29)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}
Qwen3 Sportllm
choose_action(index=0)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_ability_0"
}
Qwen3 SportmcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Qwen3 SportmcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "cancelled"
}
Qwen3 Sportllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,15hp), Opus Minimal(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 1,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T6 Precombat Main/Precombat Main (Qwen3 Sport) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Restless Anchorage",
      "index": 0,
      "action": "land",
      "id": "p3"
    }
  ]
}
Qwen3 Sportllm
choose_action(id=p3)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Opus Minimalllm
pass_priority(until=stack_resolved)
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(15hp), Opus Minimal(you,20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 5,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 7,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T7 Precombat Main/Precombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "land",
      "id": "p36"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    },
    {
      "name": "Sunbillow Verge",
      "index": 2,
      "action": "land",
      "id": "p6"
    },
    {
      "name": "Mountain",
      "index": 3,
      "action": "land",
      "id": "p27"
    },
    {
      "name": "Inspiring Vantage",
      "index": 4,
      "action": "land",
      "id": "p30"
    },
    {
      "mana_cost": "{1}{R}",
      "name": "Sarkhan, Dragon Ascendant",
      "index": 5,
      "action": "cast",
      "id": "p32",
      "power": "2",
      "toughness": "2"
    }
  ]
}
thinkingOpus Minimal
Turn 7. Drew another Maelstrom. Hellkite on board, Sarkhan in hand. Play Maelstrom (p36) as land, then cast Sarkhan. Opponent's at 15, I'm at 20 with a 4/5 flyer.
mcpsend_chat_message
raw
send_chat_message(message=Clean.)
{
  "success": true
}
Opus Minimalllm
choose_action(id=p36)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingOpus Minimal
Now cast Sarkhan. {1}{R}. Use Cavern (p5:1 for Dragon) and Mountain (p29) for R. That keeps other lands free.
llm
choose_action(id=p32, mana_plan=["p5:1","p29"])
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_2",
  "mana_plan_set": true,
  "mana_plan_size": 2
}
Opus Minimalllm
pass_priority(until=declare_attackers)
{
  "combat_phase": "attackers",
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(15hp), Opus Minimal(you,20hp)",
  "stop_reason": "combat",
  "response_type": "select",
  "untapped_lands": 6,
  "message": "Select attackers",
  "action_pending": true,
  "actions_passed": 1,
  "context": "T7 Combat/Declare Attackers (Opus Minimal)",
  "recent_chat": [
    "[System] Spell cancelled — mana plan was incorrect or incomplete."
  ],
  "respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
  "choices": [
    {
      "name": "Magmatic Hellkite",
      "index": 0,
      "choice_type": "attacker",
      "id": "p8",
      "power": "4",
      "toughness": "5"
    },
    {
      "name": "All attack",
      "index": 1,
      "choice_type": "special",
      "id": "all"
    }
  ]
}
thinkingOpus Minimal
Sarkhan cancelled again! Mana plan issue. Cavern p5:1 might not work that way. Frustrating. Attack with Hellkite at least.
llm
choose_action(attackers=["all"])
{
  "declared": [
    "all"
  ],
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "batch_attack"
}
Qwen3 Sportllm
pass_priority()
{
  "combat_phase": "blockers",
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,15hp), Opus Minimal(20hp)",
  "stop_reason": "combat",
  "response_type": "select",
  "untapped_lands": 1,
  "message": "Select blockers",
  "action_pending": true,
  "actions_passed": 4,
  "context": "T7 Combat/Declare Blockers (Opus Minimal)",
  "recent_chat": [
    "Opus Minimal: Clean."
  ],
  "respond_with": "blockers=[{\"id\":\"pN\",\"blocks\":\"pM\"},...] or answer=true (confirm) or answer=false (skip)",
  "choices": [
    {
      "name": "Tishana's Tidebinder",
      "index": 0,
      "choice_type": "blocker",
      "id": "p29",
      "power": "3",
      "toughness": "2"
    }
  ],
  "incoming_attackers": [
    {
      "name": "Magmatic Hellkite",
      "id": "p28",
      "power": "4",
      "toughness": "5"
    }
  ]
}
llmQwen3 Sport error: timeout Timed out after 45s [1]
llmQwen3 Sport error: timeout Timed out after 45s [2]
llmQwen3 Sport error: timeout Timed out after 45s [3]
llmQwen3 Sport context reset: repeated_timeouts
Qwen3 Sportllm
pass_priority()
{
  "combat_phase": "blockers",
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,15hp), Opus Minimal(20hp)",
  "stop_reason": "combat",
  "response_type": "select",
  "untapped_lands": 1,
  "message": "Select blockers",
  "action_pending": true,
  "actions_passed": 0,
  "context": "T7 Combat/Declare Blockers (Opus Minimal)",
  "respond_with": "blockers=[{\"id\":\"pN\",\"blocks\":\"pM\"},...] or answer=true (confirm) or answer=false (skip)",
  "choices": [
    {
      "name": "Tishana's Tidebinder",
      "index": 0,
      "choice_type": "blocker",
      "id": "p29",
      "power": "3",
      "toughness": "2"
    }
  ],
  "incoming_attackers": [
    {
      "name": "Magmatic Hellkite",
      "id": "p28",
      "power": "4",
      "toughness": "5"
    }
  ]
}
Qwen3 Sportllm
get_oracle_text(object_ids=["p28","p29"])
{
  "cards": [
    {
      "mana_cost": "{2}{R}{R}",
      "name": "Magmatic Hellkite",
      "rules": [
        "Flying",
        "When {this} enters, destroy target nonbasic land an opponent controls. Its controller searches their library for a basic land card, puts it onto the battlefield tapped with a stun counter on it, then shuffles."
      ],
      "power": "4",
      "type": "Creature  - Dragon",
      "toughness": "5",
      "object_id": "p28"
    },
    {
      "mana_cost": "{2}{U}",
      "name": "Tishana's Tidebinder",
      "rules": [
        "Flash",
        "When {this} enters, counter up to one target activated or triggered ability. If an ability of an artifact, creature, or planeswalker is countered this way, that permanent loses all abilities for as long as {this} remains on the battlefield."
      ],
      "power": "3",
      "type": "Creature  - Merfolk Wizard",
      "toughness": "2",
      "object_id": "p29"
    }
  ],
  "success": true
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Opus Minimalllm
pass_priority(until=postcombat_main)
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(11hp), Opus Minimal(you,20hp)",
  "stop_reason": "reached_step",
  "response_type": "select",
  "untapped_lands": 6,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 3,
  "land_drops_used": 1,
  "context": "T7 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p36"
    }
  ],
  "current_step": "Postcombat Main"
}
thinkingOpus Minimal
Hit for 4, opponent at 11. Sarkhan isn't showing as castable. Let me check my hand and what Cavern is set to.
llm
get_oracle_text(object_id=p5)
{
  "success": true,
  "name": "Cavern of Souls",
  "rules": [
    "As {this} enters, choose a creature type.",
    "{T}: Add {C}.",
    "{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.",
    "Chosen type: Dragon"
  ],
  "type": "Land"
}
thinkingOpus Minimal
OK Cavern is Dragon. Sarkhan costs {1}{R}. Plan: p5:1 (any color for Dragon, gives R) + p12 (R for generic). But Sarkhan is a Dragon creature? Let me check.
llm
get_oracle_text(object_id=p32)
{
  "success": true,
  "mana_cost": "{1}{R}",
  "name": "Sarkhan, Dragon Ascendant",
  "rules": [
    "When {this} enters, you may pay behold a Dragon. If you do, create a Treasure token.",
    "Whenever a Dragon you control enters, put a +1/+1 counter on {this}. Until end of turn, {this} becomes a Dragon in addition to its other types and gains flying."
  ],
  "power": "2",
  "type": "Legendary Creature  - Human Druid",
  "toughness": "2"
}
thinkingOpus Minimal
Sarkhan is Human Druid, NOT a Dragon! So Cavern (set to Dragon) can't pay for him with ability :1. That's why mana plans with Cavern:1 fail for Sarkhan. I need regular mana. Let me try: p12 (R) + p29 (R for generic). Wait, both produce R. {1}{R} needs 1R + 1 generic. p12 for R, p29 for generic (R counts for generic).
llm
choose_action(id=p32, mana_plan=["p12","p29"])
{
  "retryable": true,
  "success": false,
  "error_code": "invalid_choice",
  "error": "Object p32 not found in current choices",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p36"
    }
  ]
}
thinkingOpus Minimal
Sarkhan isn't even in the choices. Maybe it's not in my hand anymore? Or the system thinks I can't cast it?
llm
get_game_state()
{
  "phase": "Postcombat Main",
  "priority_player": "Opus Minimal",
  "cursor": 19,
  "stack": [],
  "active_player": "Opus Minimal",
  "players": [
    {
      "hand_size": 3,
      "graveyard": [
        {
          "name": "Get Lost",
          "id": "p22"
        },
        {
          "name": "Day of Judgment",
          "id": "p34"
        },
        {
          "name": "Steam Vents",
          "id": "p31"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Sunbillow Verge",
          "id": "p7"
        },
        {
          "tapped": true,
          "name": "Cori Mountain Monastery",
          "id": "p13"
        },
        {
          "tapped": true,
          "name": "Hallowed Fountain",
          "id": "p21"
        },
        {
          "tapped": false,
          "name": "Hallowed Fountain",
          "id": "p33"
        },
        {
          "tapped": false,
          "name": "Tishana's Tidebinder",
          "id": "p37",
          "power": "3",
          "toughness": "2",
          "summoning_sick": true
        },
        {
          "tapped": true,
          "name": "Restless Anchorage",
          "id": "p38"
        }
      ],
      "name": "Qwen3 Sport",
      "library_size": 47,
      "life": 11
    },
    {
      "hand_size": 4,
      "graveyard": [
        {
          "name": "Momo, Friendly Flier",
          "id": "p10"
        },
        {
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p9"
        },
        {
          "name": "Momo, Friendly Flier",
          "id": "p11"
        },
        {
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p18"
        }
      ],
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Sunbillow Verge",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Mountain",
          "id": "p12"
        },
        {
          "tapped": false,
          "name": "Maelstrom of the Spirit Dragon",
          "id": "p3"
        },
        {
          "tapped": false,
          "name": "Cavern of Souls",
          "id": "p5"
        },
        {
          "tapped": false,
          "name": "Mountain",
          "id": "p29"
        },
        {
          "tapped": true,
          "name": "Magmatic Hellkite",
          "id": "p8",
          "power": "4",
          "toughness": "5",
          "summoning_sick": false
        },
        {
          "tapped": false,
          "name": "Maelstrom of the Spirit Dragon",
          "id": "p36"
        }
      ],
      "name": "Opus Minimal",
      "library_size": 40,
      "life": 20,
      "hand": [
        {
          "name": "Sunbillow Verge",
          "is_land": true,
          "id": "p6"
        },
        {
          "name": "Mountain",
          "is_land": true,
          "id": "p27"
        },
        {
          "name": "Inspiring Vantage",
          "is_land": true,
          "id": "p30"
        },
        {
          "mana_cost": "{1}{R}",
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p32",
          "power": "2",
          "toughness": "2",
          "playable": true
        }
      ]
    }
  ],
  "available": true,
  "step": "Postcombat Main",
  "turn": 7
}
thinkingOpus Minimal
Sarkhan shows playable=true in hand! But it's not in the action choices. That's a Tishana's Tidebinder effect — opponent flashed it in during combat. Let me check what it's binding.
llm
get_oracle_text(object_id=p37)
{
  "success": true,
  "mana_cost": "{2}{U}",
  "name": "Tishana's Tidebinder",
  "rules": [
    "Flash",
    "When {this} enters, counter up to one target activated or triggered ability. If an ability of an artifact, creature, or planeswalker is countered this way, that permanent loses all abilities for as long as {this} remains on the battlefield."
  ],
  "power": "3",
  "type": "Creature  - Merfolk Wizard",
  "toughness": "2"
}
thinkingOpus Minimal
It countered an ability and stole abilities from a permanent. Probably targeted my Hellkite — removing flying and its abilities! Or maybe my Cavern/Maelstrom. But Sarkhan is still marked playable... The choices only show Maelstrom activations. Maybe the system is bugged about Sarkhan, or maybe Tidebinder countered something and the mana system is confused. Let me just pass and try next turn.
Qwen3 Sportllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,11hp), Opus Minimal(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 5,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 3,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T7 Precombat Main/Precombat Main (Qwen3 Sport) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Cori Mountain Monastery",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{3}{R}, {T}: Exile the top card of your library. ..."
      ],
      "id": "p2"
    },
    {
      "name": "Restless Anchorage",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{1}{W}{U}: Until end of turn, {this} becomes a 2/..."
      ],
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 2,
      "action": "cast",
      "id": "p32"
    },
    {
      "mana_cost": "{2}{U}",
      "name": "Stock Up",
      "index": 3,
      "action": "cast",
      "id": "p20"
    }
  ]
}
Qwen3 Sportllm
get_game_state()
{
  "phase": "Precombat Main",
  "priority_player": "Qwen3 Sport",
  "cursor": 11,
  "stack": [],
  "active_player": "Qwen3 Sport",
  "players": [
    {
      "hand_size": 4,
      "graveyard": [
        {
          "name": "Get Lost",
          "id": "p6"
        },
        {
          "name": "Day of Judgment",
          "id": "p5"
        },
        {
          "name": "Steam Vents",
          "id": "p17"
        }
      ],
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Sunbillow Verge",
          "id": "p1"
        },
        {
          "tapped": false,
          "name": "Cori Mountain Monastery",
          "id": "p2"
        },
        {
          "tapped": false,
          "name": "Hallowed Fountain",
          "id": "p8"
        },
        {
          "tapped": false,
          "name": "Hallowed Fountain",
          "id": "p7"
        },
        {
          "tapped": false,
          "name": "Tishana's Tidebinder",
          "id": "p29",
          "power": "3",
          "toughness": "2",
          "summoning_sick": false
        },
        {
          "tapped": false,
          "name": "Restless Anchorage",
          "id": "p3"
        }
      ],
      "name": "Qwen3 Sport",
      "library_size": 46,
      "life": 11,
      "hand": [
        {
          "mana_cost": "{U}",
          "name": "Spell Snare",
          "id": "p9"
        },
        {
          "mana_cost": "{W}{U}",
          "name": "No More Lies",
          "id": "p12"
        },
        {
          "mana_cost": "{2}{U}",
          "name": "Stock Up",
          "id": "p20",
          "playable": true
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Consult the Star Charts",
          "id": "p32",
          "playable": true
        }
      ]
    },
    {
      "hand_size": 4,
      "graveyard": [
        {
          "name": "Momo, Friendly Flier",
          "id": "p11"
        },
        {
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p14"
        },
        {
          "name": "Momo, Friendly Flier",
          "id": "p15"
        },
        {
          "name": "Sarkhan, Dragon Ascendant",
          "id": "p19"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": false,
          "name": "Sunbillow Verge",
          "id": "p10"
        },
        {
          "tapped": false,
          "name": "Mountain",
          "id": "p13"
        },
        {
          "tapped": false,
          "name": "Maelstrom of the Spirit Dragon",
          "id": "p18"
        },
        {
          "tapped": false,
          "name": "Cavern of Souls",
          "id": "p21"
        },
        {
          "tapped": false,
          "name": "Mountain",
          "id": "p27"
        },
        {
          "tapped": true,
          "name": "Magmatic Hellkite",
          "id": "p28",
          "power": "4",
          "toughness": "5",
          "summoning_sick": false
        },
        {
          "tapped": false,
          "name": "Maelstrom of the Spirit Dragon",
          "id": "p33"
        }
      ],
      "name": "Opus Minimal",
      "library_size": 40,
      "life": 20
    }
  ],
  "available": true,
  "step": "Precombat Main",
  "turn": 7
}
Opus Minimalllm
choose_action(answer=false)
{
  "success": true,
  "action_taken": "passed_priority"
}
Qwen3 Sportllm
choose_action(id=p20)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_3"
}
Qwen3 Sportllm
choose_action(index=0)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_ability_0"
}
Qwen3 Sportllm
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "confirmed"
}
Qwen3 SportmcpNo More Lies
raw
choose_action(id=p34)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "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"
}
Qwen3 Sportllm
choose_action(id=p35)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "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"
}
Qwen3 Sportllm
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "auto_selected_required_target",
  "warning": "Required target auto-selected. Use get_action_choices first, then index=N."
}
Qwen3 Sportllm
pass_priority()
{
  "stack": [
    {
      "name": "Stock Up"
    }
  ],
  "action_type": "GAME_TARGET",
  "players": "Qwen3 Sport(you,11hp), Opus Minimal(20hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "can_cancel": false,
  "untapped_lands": 2,
  "message": "Select a card ORDER to put on the BOTTOM of your library (last one chosen will be bottommost)",
  "required": true,
  "action_pending": true,
  "actions_passed": 0,
  "land_drops_used": 0,
  "context": "T7 Precombat Main/Precombat Main (Qwen3 Sport) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N",
  "choices": [
    {
      "name": "Hallowed Fountain",
      "target_type": "card",
      "index": 0,
      "id": "p37"
    },
    {
      "name": "Get Lost",
      "target_type": "card",
      "index": 1,
      "id": "p36"
    }
  ]
}
Qwen3 Sportllm
choose_action(id=p37)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "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"
}
Qwen3 Sportllm
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "confirmed"
}
Qwen3 Sportllm
pass_priority()
{
  "combat_phase": "attackers",
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,11hp), Opus Minimal(20hp)",
  "context": "T7 Combat/Declare Attackers (Qwen3 Sport)",
  "stop_reason": "combat",
  "response_type": "select",
  "untapped_lands": 2,
  "respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
  "message": "Select attackers",
  "choices": [
    {
      "name": "Tishana's Tidebinder",
      "index": 0,
      "choice_type": "attacker",
      "id": "p29",
      "power": "3",
      "toughness": "2"
    },
    {
      "name": "All attack",
      "index": 1,
      "choice_type": "special",
      "id": "all"
    }
  ],
  "action_pending": true
}
Qwen3 Sportllm
choose_action(attackers=["p29"])
{
  "declared": [
    "p29"
  ],
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "batch_attack"
}
Qwen3 Sportllm
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "confirmed"
}
Qwen3 Sportllm
pass_priority()
{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,11hp), Opus Minimal(17hp)",
  "context": "T7 Combat/Combat Damage (Qwen3 Sport)",
  "stop_reason": "playable_cards",
  "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",
  "choices": [
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 0,
      "action": "cast",
      "id": "p32"
    }
  ],
  "action_pending": true
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Qwen3 Sportllm
pass_priority()
{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,11hp), Opus Minimal(17hp)",
  "context": "T8 Precombat Main/Precombat Main (Opus Minimal)",
  "stop_reason": "playable_cards",
  "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",
  "choices": [
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 0,
      "action": "cast",
      "id": "p32"
    }
  ],
  "action_pending": true
}
Opus Minimalllm
pass_priority(until=my_turn)
{
  "combat_phase": "attackers",
  "actions_passed": 1,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(11hp), Opus Minimal(you,17hp)",
  "context": "T8 Combat/Declare Attackers (Opus Minimal)",
  "stop_reason": "combat",
  "response_type": "select",
  "untapped_lands": 6,
  "respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
  "message": "Select attackers",
  "choices": [
    {
      "name": "Magmatic Hellkite",
      "index": 0,
      "choice_type": "attacker",
      "id": "p8",
      "power": "4",
      "toughness": "5"
    },
    {
      "name": "All attack",
      "index": 1,
      "choice_type": "special",
      "id": "all"
    }
  ],
  "action_pending": true
}
thinkingOpus Minimal
Turn 8, I took 3 from Tidebinder. Now at 17. They're at 11. Attack with Hellkite!
llm
choose_action(attackers=["all"])
{
  "declared": [
    "all"
  ],
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "batch_attack"
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Qwen3 Sportllm
pass_priority()
{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,11hp), Opus Minimal(17hp)",
  "context": "T8 Combat/Declare Blockers (Opus Minimal)",
  "stop_reason": "playable_cards",
  "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",
  "choices": [
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 0,
      "action": "cast",
      "id": "p32"
    }
  ],
  "action_pending": true
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Opus Minimalllm
pass_priority(until=postcombat_main)
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(7hp), Opus Minimal(you,17hp)",
  "stop_reason": "reached_step",
  "response_type": "select",
  "untapped_lands": 6,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 3,
  "land_drops_used": 0,
  "context": "T8 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p36"
    },
    {
      "name": "Sunbillow Verge",
      "index": 2,
      "action": "land",
      "id": "p6"
    },
    {
      "name": "Mountain",
      "index": 3,
      "action": "land",
      "id": "p27"
    },
    {
      "name": "Inspiring Vantage",
      "index": 4,
      "action": "land",
      "id": "p30"
    },
    {
      "mana_cost": "{1}{R}",
      "name": "Sarkhan, Dragon Ascendant",
      "index": 5,
      "action": "cast",
      "id": "p39",
      "power": "2",
      "toughness": "2"
    },
    {
      "mana_cost": "{1}{R}",
      "name": "Sarkhan, Dragon Ascendant",
      "index": 6,
      "action": "cast",
      "id": "p32",
      "power": "2",
      "toughness": "2"
    }
  ],
  "current_step": "Postcombat Main"
}
thinkingOpus Minimal
Opponent at 7! And now Sarkhan IS in the choices — TWO copies! Drew another one. Play a land first, then cast Sarkhan. Play Inspiring Vantage (enters untapped if I have Mountain/Plains).
llm
choose_action(id=p30)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_4"
}
thinkingOpus Minimal
Now cast Sarkhan. {1}{R}. Use p12 (R) and p29 (R for generic).
llm
choose_action(id=p39, mana_plan=["p12","p29"])
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_2",
  "mana_plan_set": true,
  "mana_plan_size": 2
}
Qwen3 Sportllm
pass_priority()
{
  "stack": [
    {
      "name": "Sarkhan, Dragon Ascendant"
    }
  ],
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,7hp), Opus Minimal(17hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "message": "Play instants and activated abilities",
  "action_pending": true,
  "actions_passed": 1,
  "has_playable_cards": true,
  "context": "T8 Postcombat Main/Postcombat Main (Opus Minimal)",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{W}{U}",
      "name": "No More Lies",
      "index": 0,
      "action": "cast",
      "id": "p12"
    },
    {
      "mana_cost": "{W}{U}",
      "name": "No More Lies",
      "index": 1,
      "action": "cast",
      "id": "p34"
    },
    {
      "mana_cost": "{U}",
      "name": "Spell Snare",
      "index": 2,
      "action": "cast",
      "id": "p9"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 3,
      "action": "cast",
      "id": "p32"
    }
  ]
}
Opus Minimalllm
pass_priority(until=stack_resolved)
{
  "stack": [
    {
      "name": "Ability"
    }
  ],
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(7hp), Opus Minimal(you,17hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 4,
  "message": "Play instants and activated abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 1,
  "has_playable_cards": true,
  "context": "T8 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p36"
    }
  ]
}
thinkingOpus Minimal
Sarkhan ETB on the stack — "behold a Dragon" to create a Treasure. Let it resolve.
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Opus Minimalllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingOpus Minimal
Yes, behold a Dragon (I have Hellkite) for a Treasure.
mcptrue
raw
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "yes"
}
Opus Minimalllm
get_action_choices()
{
  "stack": [
    {
      "name": "Ability"
    }
  ],
  "action_type": "GAME_TARGET",
  "players": "Qwen3 Sport(7hp), Opus Minimal(you,17hp)",
  "action_taken": "auto_cancelled_no_targets",
  "response_type": "index",
  "can_cancel": true,
  "untapped_lands": 4,
  "message": "Select a Dragon you control",
  "required": false,
  "action_pending": false,
  "land_drops_used": 1,
  "context": "T8 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N, or answer=false to cancel"
}
thinkingOpus Minimal
Auto-cancelled — no valid Dragon target? Maybe Tidebinder removed Hellkite's types. Let it go.
Qwen3 Sportllm
pass_priority()
{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,7hp), Opus Minimal(17hp)",
  "context": "T8 Postcombat Main/Postcombat Main (Opus Minimal)",
  "stop_reason": "playable_cards",
  "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",
  "choices": [
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 0,
      "action": "cast",
      "id": "p32"
    }
  ],
  "action_pending": true
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Opus Minimalllm
pass_priority(until=stack_resolved)
{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(7hp), Opus Minimal(you,17hp)",
  "context": "T8 Precombat Main/Precombat Main (Qwen3 Sport)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 4,
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play instants and activated abilities",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p36"
    }
  ],
  "action_pending": true
}
thinkingOpus Minimal
Opponent's precombat main. I could activate Maelstrom to search for a Dragon, but 4 mana + sac is steep. Let me save it. They're at 7, I have Hellkite (4 power) + Sarkhan (2 power). Next attack = 6 damage, puts them to 1. One more turn after. Actually — I should cast the second Sarkhan too! Wait, it's opponent's turn. Pass for now.
Qwen3 Sportllm
pass_priority()
{
  "combat_phase": "attackers",
  "actions_passed": 1,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,7hp), Opus Minimal(17hp)",
  "context": "T8 Combat/Declare Attackers (Qwen3 Sport)",
  "stop_reason": "combat",
  "response_type": "select",
  "untapped_lands": 5,
  "respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
  "message": "Select attackers",
  "choices": [
    {
      "name": "Tishana's Tidebinder",
      "index": 0,
      "choice_type": "attacker",
      "id": "p29",
      "power": "3",
      "toughness": "2"
    },
    {
      "name": "All attack",
      "index": 1,
      "choice_type": "special",
      "id": "all"
    }
  ],
  "action_pending": true
}
Qwen3 Sportllm
choose_action(attackers=["p29"])
{
  "declared": [
    "p29"
  ],
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "batch_attack"
}
Opus Minimalllm
choose_action(answer=false)
{
  "success": true,
  "action_taken": "passed_priority"
}
llmQwen3 Sport error: timeout Timed out after 45s [1]
Opus Minimalllm
pass_priority(until=my_turn)
{
  "combat_phase": "blockers",
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(7hp), Opus Minimal(you,17hp)",
  "stop_reason": "combat",
  "response_type": "select",
  "untapped_lands": 4,
  "message": "Select blockers",
  "action_pending": true,
  "actions_passed": 1,
  "context": "T8 Combat/Declare Blockers (Qwen3 Sport)",
  "respond_with": "blockers=[{\"id\":\"pN\",\"blocks\":\"pM\"},...] or answer=true (confirm) or answer=false (skip)",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p36"
    },
    {
      "name": "Sarkhan, Dragon Ascendant",
      "index": 2,
      "choice_type": "blocker",
      "id": "p39",
      "power": "2",
      "toughness": "2"
    }
  ],
  "incoming_attackers": [
    {
      "name": "Tishana's Tidebinder",
      "id": "p37",
      "power": "3",
      "toughness": "2"
    }
  ]
}
thinkingOpus Minimal
Tidebinder attacking for 3. I can block with Sarkhan (2/2) — trade favorably since Tidebinder dies AND its suppression effect goes away, giving Hellkite back its abilities. Sarkhan dies too, but I have another in hand. This is excellent.
Qwen3 Sportllm
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "confirmed"
}
Qwen3 Sportllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,7hp), Opus Minimal(17hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 5,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T8 Postcombat Main/Postcombat Main (Qwen3 Sport) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{W}",
      "name": "Seam Rip",
      "index": 0,
      "action": "cast",
      "id": "p35"
    },
    {
      "name": "Cori Mountain Monastery",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{3}{R}, {T}: Exile the top card of your library. ..."
      ],
      "id": "p2"
    },
    {
      "name": "Restless Anchorage",
      "index": 2,
      "action": "activate",
      "playable_abilities": [
        "{1}{W}{U}: Until end of turn, {this} becomes a 2/..."
      ],
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 3,
      "action": "cast",
      "id": "p32"
    },
    {
      "mana_cost": "{1}{W}",
      "name": "Rest in Peace",
      "index": 4,
      "action": "cast",
      "id": "p41"
    }
  ]
}
Qwen3 Sportllm
choose_action(id=p41)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_4"
}
Qwen3 Sportllm
choose_action(answer=true)
{
  "retryable": true,
  "success": false,
  "error_code": "missing_param",
  "error": "GAME_CHOOSE_ABILITY requires index=N. Call get_action_choices first to see the available abilities, then choose_action with the index of the one you want.",
  "choices": [
    {
      "index": 0,
      "description": "1. {T}: Add {W}."
    },
    {
      "index": 1,
      "description": "2. {T}: Add {R}. Activate only if you control a Mountain or a Plains."
    }
  ]
}
Opus Minimalllm
choose_action(blockers=["p39:p37"])
{
  "declared": [
    {
      "id": "p39",
      "blocks": "p37"
    }
  ],
  "success": true,
  "action_taken": "batch_block"
}
Qwen3 Sportllm
choose_action(index=0)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_ability_0"
}
Opus Minimalmcpsend_chat_message
raw
send_chat_message(message=Efficient trade.)
{
  "success": true
}
Qwen3 Sportllm
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "confirmed"
}
Qwen3 Sportllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,7hp), Opus Minimal(17hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 3,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T8 Postcombat Main/Postcombat Main (Qwen3 Sport) YOUR_MAIN",
  "recent_chat": [
    "Opus Minimal: Efficient trade."
  ],
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{W}",
      "name": "Seam Rip",
      "index": 0,
      "action": "cast",
      "id": "p35"
    },
    {
      "name": "Restless Anchorage",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{1}{W}{U}: Until end of turn, {this} becomes a 2/..."
      ],
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 2,
      "action": "cast",
      "id": "p32"
    }
  ]
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Opus Minimalllm
pass_priority(until=my_turn)
{
  "combat_phase": "attackers",
  "actions_passed": 1,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(7hp), Opus Minimal(you,17hp)",
  "context": "T9 Combat/Declare Attackers (Opus Minimal)",
  "stop_reason": "combat",
  "response_type": "select",
  "untapped_lands": 7,
  "respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
  "message": "Select attackers",
  "choices": [
    {
      "name": "Magmatic Hellkite",
      "index": 0,
      "choice_type": "attacker",
      "id": "p8",
      "power": "4",
      "toughness": "5"
    },
    {
      "name": "All attack",
      "index": 1,
      "choice_type": "special",
      "id": "all"
    }
  ],
  "action_pending": true
}
thinkingOpus Minimal
Turn 9. They're at 7, Hellkite hits for 4. That leaves them at 3. Then next turn finishes. But wait — did I play the second Sarkhan precombat? Let me check if I missed precombat main. The system jumped to combat. Attack with Hellkite.
llm
choose_action(attackers=["all"])
{
  "declared": [
    "all"
  ],
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "batch_attack"
}
Qwen3 Sportllm
pass_priority()
{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,7hp), Opus Minimal(17hp)",
  "context": "T9 Combat/Declare Attackers (Opus Minimal)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 3,
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play instants and activated abilities",
  "choices": [
    {
      "name": "Restless Anchorage",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{1}{W}{U}: Until end of turn, {this} becomes a 2/..."
      ],
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 1,
      "action": "cast",
      "id": "p32"
    }
  ],
  "action_pending": true
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Qwen3 Sportllm
pass_priority()
{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,3hp), Opus Minimal(17hp)",
  "context": "T9 Combat/Combat Damage (Opus Minimal)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 3,
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play instants and activated abilities",
  "choices": [
    {
      "name": "Restless Anchorage",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{1}{W}{U}: Until end of turn, {this} becomes a 2/..."
      ],
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 1,
      "action": "cast",
      "id": "p32"
    }
  ],
  "action_pending": true
}
Opus Minimalllm
pass_priority(until=postcombat_main)
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(3hp), Opus Minimal(you,17hp)",
  "stop_reason": "reached_step",
  "response_type": "select",
  "untapped_lands": 7,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 3,
  "land_drops_used": 0,
  "context": "T9 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p36"
    },
    {
      "name": "Sunbillow Verge",
      "index": 2,
      "action": "land",
      "id": "p6"
    },
    {
      "name": "Mountain",
      "index": 3,
      "action": "land",
      "id": "p27"
    },
    {
      "mana_cost": "{W}",
      "name": "Momo, Friendly Flier",
      "index": 4,
      "action": "cast",
      "id": "p45",
      "power": "1",
      "toughness": "1"
    },
    {
      "mana_cost": "{1}{R}",
      "name": "Sarkhan, Dragon Ascendant",
      "index": 5,
      "action": "cast",
      "id": "p32",
      "power": "2",
      "toughness": "2"
    }
  ],
  "current_step": "Postcombat Main"
}
thinkingOpus Minimal
Opponent at 3! Cast Sarkhan + Momo for extra bodies. Play land first, then both creatures.
llm
choose_action(id=p27)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_3"
}
thinkingOpus Minimal
Cast Sarkhan first ({1}{R}).
llm
choose_action(id=p32, mana_plan=["p12","p29"])
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_3",
  "mana_plan_set": true,
  "mana_plan_size": 2
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Opus Minimalllm
pass_priority(until=stack_resolved)
{
  "stack": [
    {
      "name": "Ability"
    }
  ],
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(3hp), Opus Minimal(you,17hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 6,
  "message": "Play instants and activated abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 1,
  "has_playable_cards": true,
  "context": "T9 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p36"
    }
  ]
}
thinkingOpus Minimal
Sarkhan ETB trigger. Pass to let it resolve.
Qwen3 Sportllm
pass_priority()
{
  "stack": [
    {
      "name": "Ability"
    }
  ],
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,3hp), Opus Minimal(17hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 3,
  "message": "Play instants and activated abilities",
  "action_pending": true,
  "actions_passed": 1,
  "has_playable_cards": true,
  "context": "T9 Postcombat Main/Postcombat Main (Opus Minimal)",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Restless Anchorage",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{1}{W}{U}: Until end of turn, {this} becomes a 2/..."
      ],
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 1,
      "action": "cast",
      "id": "p32"
    }
  ]
}
Opus Minimalllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingOpus Minimal
Behold a Dragon for Treasure — yes!
mcptrue
raw
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "yes"
}
Opus Minimalllm
get_action_choices()
{
  "stack": [
    {
      "name": "Ability"
    }
  ],
  "action_type": "GAME_TARGET",
  "players": "Qwen3 Sport(3hp), Opus Minimal(you,17hp)",
  "action_taken": "auto_cancelled_no_targets",
  "response_type": "index",
  "can_cancel": true,
  "untapped_lands": 6,
  "message": "Select a Dragon you control",
  "required": false,
  "action_pending": false,
  "land_drops_used": 1,
  "context": "T9 Postcombat Main/Postcombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N, or answer=false to cancel"
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "success": true,
  "action_taken": "passed_priority"
}
thinkingOpus Minimal
Hmm, auto-cancelled again — Hellkite must be tapped from attacking. Does "behold" require revealing? Let me check. No matter, the Treasure didn't happen. Now cast Momo.
Qwen3 Sportllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,3hp), Opus Minimal(17hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 5,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T9 Precombat Main/Precombat Main (Qwen3 Sport) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Plains",
      "index": 0,
      "action": "land",
      "id": "p25"
    },
    {
      "mana_cost": "{W}",
      "name": "Seam Rip",
      "index": 1,
      "action": "cast",
      "id": "p35"
    },
    {
      "name": "Cori Mountain Monastery",
      "index": 2,
      "action": "activate",
      "playable_abilities": [
        "{3}{R}, {T}: Exile the top card of your library. ..."
      ],
      "id": "p2"
    },
    {
      "name": "Restless Anchorage",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{1}{W}{U}: Until end of turn, {this} becomes a 2/..."
      ],
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 4,
      "action": "cast",
      "id": "p32"
    }
  ]
}
Qwen3 Sportllm
choose_action(id=p25)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}
Opus Minimalllm
pass_priority(until=stack_resolved)
{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(3hp), Opus Minimal(you,17hp)",
  "context": "T9 Precombat Main/Precombat Main (Qwen3 Sport)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 6,
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play instants and activated abilities",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p36"
    }
  ],
  "action_pending": true
}
thinkingOpus Minimal
It's opponent's turn now — I missed casting Momo postcombat. Pass.
Qwen3 Sportllm
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "confirmed"
}
Opus Minimalllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Qwen3 Sportllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,3hp), Opus Minimal(17hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 6,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 1,
  "has_playable_cards": true,
  "context": "T9 Postcombat Main/Postcombat Main (Qwen3 Sport) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{W}",
      "name": "Seam Rip",
      "index": 0,
      "action": "cast",
      "id": "p35"
    },
    {
      "name": "Cori Mountain Monastery",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{3}{R}, {T}: Exile the top card of your library. ..."
      ],
      "id": "p2"
    },
    {
      "name": "Restless Anchorage",
      "index": 2,
      "action": "activate",
      "playable_abilities": [
        "{1}{W}{U}: Until end of turn, {this} becomes a 2/..."
      ],
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 3,
      "action": "cast",
      "id": "p32"
    }
  ]
}
Opus Minimalllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(3hp), Opus Minimal(you,17hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 8,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T10 Precombat Main/Precombat Main (Opus Minimal) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p36"
    },
    {
      "name": "Sunbillow Verge",
      "index": 1,
      "action": "land",
      "id": "p6"
    },
    {
      "mana_cost": "{W}",
      "name": "Momo, Friendly Flier",
      "index": 2,
      "action": "cast",
      "id": "p45",
      "power": "1",
      "toughness": "1"
    },
    {
      "mana_cost": "{2}{W}",
      "name": "Clarion Conqueror",
      "index": 3,
      "action": "cast",
      "id": "p49",
      "power": "3",
      "toughness": "3"
    },
    {
      "name": "Maelstrom of the Spirit Dragon",
      "index": 4,
      "action": "activate",
      "playable_abilities": [
        "{4}, {T}, Sacrifice {this}: Search your library f..."
      ],
      "id": "p3"
    }
  ]
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingOpus Minimal
Turn 10, opponent at 3. I have Hellkite (4 power) + Sarkhan (2 power). That's 6 damage on attack — lethal! Cast Momo precombat for extra insurance, then swing.
llm
choose_action(id=p6)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_1"
}
Opus Minimalllm
choose_action(id=p45, mana_plan=["p30"])
{
  "retryable": true,
  "success": false,
  "error_code": "invalid_choice",
  "error": "Object p45 not found in current choices",
  "choices": [
    {
      "name": "Magmatic Hellkite",
      "index": 0,
      "choice_type": "attacker",
      "id": "p8",
      "power": "4",
      "toughness": "5"
    },
    {
      "name": "Sarkhan, Dragon Ascendant",
      "index": 1,
      "choice_type": "attacker",
      "id": "p32",
      "power": "2",
      "toughness": "2"
    },
    {
      "name": "All attack",
      "index": 2,
      "choice_type": "special",
      "id": "all"
    }
  ]
}
thinkingOpus Minimal
Already in combat! Hellkite (4) + Sarkhan (2) = 6 damage. Opponent at 3. That's lethal!
llm
choose_action(attackers=["all"])
{
  "declared": [
    "all"
  ],
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "batch_attack"
}
Opus Minimalmcpsend_chat_message
raw
send_chat_message(message=GG.)
{
  "success": true
}
Qwen3 Sportllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Qwen3 Sport(you,3hp), Opus Minimal(17hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 6,
  "message": "Play instants and activated abilities",
  "action_pending": true,
  "actions_passed": 1,
  "has_playable_cards": true,
  "context": "T10 Combat/Declare Attackers (Opus Minimal)",
  "recent_chat": [
    "Opus Minimal: GG."
  ],
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Cori Mountain Monastery",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{3}{R}, {T}: Exile the top card of your library. ..."
      ],
      "id": "p2"
    },
    {
      "name": "Restless Anchorage",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{1}{W}{U}: Until end of turn, {this} becomes a 2/..."
      ],
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 2,
      "action": "cast",
      "id": "p32"
    }
  ]
}
Qwen3 Sportllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}
Qwen3 Sportllm
pass_priority()
{
  "actions_passed": 1,
  "stop_reason": "game_over",
  "action_pending": false,
  "player_dead": true
}
llmQwen3 Sport switched to auto-pilot: player_dead
Opus Minimalllm
pass_priority(until=end_of_turn)
{
  "actions_passed": 1,
  "stop_reason": "game_over",
  "game_over": true,
  "action_pending": false
}
llmOpus Minimal switched to auto-pilot: game_over
llmOpus Minimal Spell cancelled — mana plan was incorrect or incomplete.
llmOpus Minimal Spell cancelled — mana plan was incorrect or incomplete.
llmOpus Minimal Spell cancelled — mana plan was incorrect or incomplete.
gamespectator1 has started watching
gameOpus Minimal chooses that they take the first turn
gameOpus Minimal draws seven cards
gameQwen3 Sport draws seven cards