Haiku Analyst (Esper Self Bounce Woe) vs GPT5m Rivals (Dimir Midrange Woe)
3 major, 6 moderate, 11 minor, 2 questionable blunders
Season 1
/ 180
Stack
Game Log
llmHaiku Analyst game_start
llmGPT5m Rivals game_start
llmGPT5m Rivals error: timeout Timed out after 45s [1]
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p2, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_ASK. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_1",
  "warning": "Both id and index provided; used id=p2, ignored index=0"
}
thinkingHaiku Analyst
Looking at my hand: - 3 lands: Godless Shrine, Hallowed Fountain, Hallowed Fountain - 2 copies of Kaito, Bane of Nightmares (2UB planeswalker) - Grim Bauble (1B artifact) - Sunpearl Kirin (1W creature, 2/1) This is a solid 7-card hand. I have good mana fixing with two different dual lands, a strong planeswalker in Kaito (even with 2 copies), early plays, and reasonable curve. The land count is adequate at 3 for a deck that appears to be running Wx/Ux/Bx cards. I don't see any major red flags like no lands or stuck colors. I'll **keep this hand**.
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "no"
}
Haiku AnalystmcpKeep hand
raw
choose_action(answer=false)
{
  "success": true,
  "action_taken": "no"
}
thinkingHaiku Analyst
Hand kept! We're ready to go. Let me proceed to see what happens next.
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p3, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p3, ignored index=0"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m Rivalsllm
pass_priority(until=end_of_turn)
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(20hp), GPT5m Rivals(you,20hp)",
  "context": "T1 Combat/Declare Attackers (GPT5m Rivals)",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "untapped_lands": 1,
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "actions_passed": 0,
  "land_drops_used": 1,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(20hp), GPT5m Rivals(you,20hp)",
  "context": "T1 Postcombat Main/Postcombat Main (GPT5m Rivals) YOUR_MAIN",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "untapped_lands": 1,
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play spells and abilities",
  "action_pending": true
}
Haiku Analystllm
pass_priority()
{
  "actions_passed": 3,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,20hp), GPT5m Rivals(20hp)",
  "context": "T1 Precombat Main/Precombat Main (Haiku Analyst) 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": "Hallowed Fountain",
      "index": 0,
      "action": "land",
      "id": "p1"
    },
    {
      "name": "Godless Shrine",
      "index": 1,
      "action": "land",
      "id": "p2"
    },
    {
      "name": "Hallowed Fountain",
      "index": 2,
      "action": "land",
      "id": "p3"
    }
  ],
  "action_pending": true
}
thinkingHaiku Analyst
It's my turn 1 precombat main. I have three lands playable. Let me play a dual land to develop my mana base. I'll play **Hallowed Fountain** (p1) first to enable blue mana if I need it.
llm
choose_action(id=p1)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_ASK. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
Hallowed Fountain's fetchland ability is asking if I want to pay 2 life. At 20 life on turn 1 with no immediate threats, paying 2 is worth it to have an untapped dual land. I'll **pay the 2 life**.
mcptrue
raw
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "yes"
}
thinkingHaiku Analyst
I've used my 1 land drop. Now I need to decide if I should play more spells. I have: - Grim Bauble (1B) - Sunpearl Kirin (1W) - Kaito, Bane of Nightmares (2UB) - need 2 more mana - Another Hallowed Fountain or Godless Shrine On turn 1, I can play Sunpearl Kirin (costs 1W), but I only have 1 untapped land (Hallowed Fountain which produces U or W). Let me play the Kirin to establish early board presence.
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(18hp), GPT5m Rivals(you,20hp)",
  "context": "T1 Precombat Main/Precombat Main (Haiku Analyst)",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "untapped_lands": 1,
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(18hp), GPT5m Rivals(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": "T2 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Watery Grave",
      "index": 0,
      "action": "land",
      "id": "p4"
    },
    {
      "name": "Gloomlake Verge",
      "index": 1,
      "action": "land",
      "id": "p5"
    }
  ]
}
Haiku Analystllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,18hp), GPT5m Rivals(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 1,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 6,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T2 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Godless Shrine",
      "index": 0,
      "action": "land",
      "id": "p2"
    },
    {
      "name": "Hallowed Fountain",
      "index": 1,
      "action": "land",
      "id": "p3"
    }
  ]
}
thinkingHaiku Analyst
Now it's turn 2. I see I can play another land. Let me play Godless Shrine (p2) to have both white and black mana available.
mcp0
raw
choose_action(id=p2)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_ASK. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
Again, paying 2 life for an untapped dual land on turn 2 is good. I'll accept.
mcptrue
raw
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "yes"
}
thinkingHaiku Analyst
Good! Now I have 2 untapped lands. I can play Sunpearl Kirin (p6) for 1W. Let me cast it to develop my board.
mcpCast Sunpearl Kirin {1}{W}
raw
choose_action(id=p6)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_2"
}
thinkingHaiku Analyst
I've played Sunpearl Kirin. I still have mana and could play Grim Bauble (B), but let me check what else I have available by passing priority to see if there are more impactful plays.
mcpPass
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 handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku Analystllm
get_action_choices()
{
  "land_drops_used": 1,
  "action_type": "GAME_TARGET",
  "players": "Haiku Analyst(you,16hp), GPT5m Rivals(20hp)",
  "context": "T2 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "action_taken": "auto_cancelled_no_targets",
  "response_type": "index",
  "can_cancel": true,
  "respond_with": "id=\"pN\" or index=N, or answer=false to cancel",
  "message": "Select up to one other target nonland permanent you control",
  "required": false,
  "action_pending": false
}
thinkingHaiku Analyst
That appears to be a Sunpearl Kirin trigger (it checks for other permanents). Since there are no valid targets, it auto-cancelled. Let me continue with my turn.
llmGPT5m Rivals error: timeout Timed out after 45s [1]
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p4, text=)
{
  "retryable": true,
  "success": false,
  "warning": "Both id and index provided; used id=p4, ignored index=0",
  "error_code": "invalid_choice",
  "error": "Object p4 not found in current choices",
  "choices": [
    {
      "mana_cost": "{B}",
      "name": "Requiting Hex",
      "index": 0,
      "action": "cast",
      "id": "p7"
    }
  ]
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p7, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p7, ignored index=0"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(16hp), GPT5m Rivals(you,20hp)",
  "context": "T3 Combat/Declare Attackers (GPT5m Rivals)",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(16hp), GPT5m Rivals(you,20hp)",
  "context": "T3 Combat/Declare Attackers (GPT5m Rivals)",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
Haiku Analystllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,16hp), GPT5m Rivals(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 8,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T3 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{B}",
      "name": "Grim Bauble",
      "index": 0,
      "action": "cast",
      "id": "p4"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Nowhere to Run",
      "index": 1,
      "action": "cast",
      "id": "p7"
    },
    {
      "mana_cost": "{B}",
      "name": "Grim Bauble",
      "index": 2,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Hallowed Fountain",
      "index": 3,
      "action": "land",
      "id": "p3"
    }
  ]
}
thinkingHaiku Analyst
It's turn 3 now. I have several new cards in my choices, including "Nowhere to Run" (1B). I also still have the option to play my third land. I have 2 untapped lands, so I can cast Nowhere to Run (p7). Let me play it.
llm
choose_action(id=p7)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_1"
}
thinkingHaiku Analyst
I've cast Nowhere to Run. Let me continue playing more spells if I can.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I can still play the third land. Let me do that.
mcpPlay Hallowed Fountain
raw
choose_action(id=p3)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_ASK. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
I'm at 16 life already after the earlier dual land payments. Paying 2 more for untapped would put me at 14. That's still reasonable, but I need to think about whether I need untapped or can tap. Actually, I have good mana now and should have plenty of resources. I'll pay it to stay flexible.
mcptrue
raw
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "yes"
}
thinkingHaiku Analyst
I have 1 untapped land left and can cast "Boomerang Basics" (U). Let me cast it.
mcpCast Boomerang Basics {U}
raw
choose_action(id=p10)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
Good, I've cast Boomerang Basics. Let me continue through my main phase.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
No more cards to play. Let me end my main phase and move to combat.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I'm at combat. Let me pass through any abilities and get to declare attackers.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
It looks like the game advanced directly to postcombat main. Let me check the game state to understand what happened.
llm
get_game_state()
{
  "phase": "Postcombat Main",
  "priority_player": "Haiku Analyst",
  "cursor": 4,
  "stack": [],
  "active_player": "Haiku Analyst",
  "players": [
    {
      "hand_size": 6,
      "graveyard": [
        {
          "name": "Sunpearl Kirin",
          "id": "p6"
        },
        {
          "name": "Boomerang Basics",
          "id": "p10"
        }
      ],
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": true,
          "name": "Hallowed Fountain",
          "id": "p1"
        },
        {
          "tapped": true,
          "name": "Godless Shrine",
          "id": "p2"
        },
        {
          "tapped": true,
          "name": "Hallowed Fountain",
          "id": "p3"
        }
      ],
      "name": "Haiku Analyst",
      "library_size": 49,
      "life": 14,
      "hand": [
        {
          "mana_cost": "{2}{U}{B}",
          "name": "Kaito, Bane of Nightmares",
          "id": "p8"
        },
        {
          "mana_cost": "{2}{U}{B}",
          "name": "Kaito, Bane of Nightmares",
          "id": "p9"
        },
        {
          "mana_cost": "{B}",
          "name": "Grim Bauble",
          "id": "p4"
        },
        {
          "mana_cost": "{B}",
          "name": "Grim Bauble",
          "id": "p5"
        },
        {
          "mana_cost": "{1}{B}",
          "name": "Nowhere to Run",
          "id": "p7"
        },
        {
          "mana_cost": "{2}{U}{B}",
          "name": "Kaito, Bane of Nightmares",
          "id": "p13"
        }
      ]
    },
    {
      "hand_size": 7,
      "graveyard": [
        {
          "name": "Requiting Hex",
          "id": "p12"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Swamp",
          "id": "p11"
        }
      ],
      "name": "GPT5m Rivals",
      "library_size": 49,
      "life": 20
    }
  ],
  "available": true,
  "step": "Postcombat Main",
  "turn": 3
}
thinkingHaiku Analyst
Interesting. I'm in postcombat main on turn 3. Looking at my graveyard: I see Sunpearl Kirin and Boomerang Basics in my graveyard, which means they were cast and resolved. However, I don't see Nowhere to Run or Kaito in my graveyard, so one of those might still be on the stack or my hand is just showing the duplicates. Let me continue. I'm still in my main phase postcombat. I can play more spells. I have 3 Kaito planeswalkers in hand (all 2UB), and two Grim Baubles (B each), and Nowhere to Run (1B). Let me check what I can play. Since all my lands are tapped, I can't cast anything right now. Let me pass.
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(14hp), GPT5m Rivals(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": "T4 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Watery Grave",
      "index": 0,
      "action": "land",
      "id": "p4"
    },
    {
      "name": "Gloomlake Verge",
      "index": 1,
      "action": "land",
      "id": "p5"
    }
  ]
}
Haiku AnalystmcpPass
raw
choose_action(answer=false)
{
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p4, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_ASK. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p4, ignored index=0"
}
thinkingHaiku Analyst
Now let me continue to my end step.
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=true, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "yes"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(14hp), GPT5m Rivals(you,18hp)",
  "stop_reason": "pending_action_from_choose_action",
  "response_type": "select",
  "untapped_lands": 2,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 0,
  "land_drops_used": 1,
  "context": "T4 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{1}{B}",
      "name": "Deep-Cavern Bat",
      "index": 0,
      "action": "cast",
      "id": "p13",
      "power": "1",
      "toughness": "1"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Deep-Cavern Bat",
      "index": 1,
      "action": "cast",
      "id": "p14",
      "power": "1",
      "toughness": "1"
    }
  ]
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p13, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p13, ignored index=0"
}
GPT5m Rivalsllm
pass_priority(until=end_of_turn)
{
  "actions_passed": 0,
  "land_drops_used": 1,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(14hp), GPT5m Rivals(you,18hp)",
  "context": "T4 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "actions_passed": 0,
  "land_drops_used": 1,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(14hp), GPT5m Rivals(you,18hp)",
  "context": "T4 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_TARGET",
  "players": "Haiku Analyst(14hp), GPT5m Rivals(you,18hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "can_cancel": true,
  "message": "Select up to one a nonland card",
  "required": false,
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 1,
  "context": "T4 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N, or answer=false to cancel",
  "choices": [
    {
      "name": "Kaito, Bane of Nightmares",
      "target_type": "card",
      "index": 0,
      "id": "p18"
    },
    {
      "name": "Grim Bauble",
      "target_type": "card",
      "index": 1,
      "id": "p19"
    },
    {
      "name": "Kaito, Bane of Nightmares",
      "target_type": "card",
      "index": 2,
      "id": "p20"
    },
    {
      "name": "Grim Bauble",
      "target_type": "card",
      "index": 3,
      "id": "p21"
    },
    {
      "name": "Nowhere to Run",
      "target_type": "card",
      "index": 4,
      "id": "p22"
    },
    {
      "name": "Kaito, Bane of Nightmares",
      "target_type": "card",
      "index": 5,
      "id": "p23"
    }
  ]
}
Haiku Analystllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,14hp), GPT5m Rivals(18hp)",
  "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": "T4 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{1}{B}",
      "name": "Nowhere to Run",
      "index": 0,
      "action": "cast",
      "id": "p14"
    },
    {
      "mana_cost": "{B}",
      "name": "Grim Bauble",
      "index": 1,
      "action": "cast",
      "id": "p4"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Nowhere to Run",
      "index": 2,
      "action": "cast",
      "id": "p7"
    },
    {
      "mana_cost": "{B}",
      "name": "Grim Bauble",
      "index": 3,
      "action": "cast",
      "id": "p5"
    }
  ]
}
thinkingHaiku Analyst
Great! It's now turn 4 and the opponent is at 18 life (down from 20). I have 3 untapped lands. I can see Nowhere to Run and Grim Bauble options. Let me strategize: - I have Kaito, Bane of Nightmares in hand (2UB) which is a powerful planeswalker - I can cast one of the Nowhere to Run (1B) first, then Kaito with 2UB left Let me cast Nowhere to Run first to remove threats.
llm
choose_action(id=p14)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
Good, I cast Nowhere to Run. Now I have 1 untapped land and can continue playing.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Let me continue to check for more spells I can cast.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p18, text=)
{
  "success": true,
  "action_taken": "selected_target_0",
  "warning": "Both id and index provided; used id=p18, ignored index=0"
}
thinkingHaiku Analyst
I have 1 untapped land and can't cast the 2UB Kaito. Let me pass this phase and move to combat.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I'm in combat. Let me pass any instant/ability phases.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I'm in postcombat main. I still only have 1 untapped land, so I can't cast Kaito. Let me end my turn.
GPT5m Rivalsllm
pass_priority(until=end_of_turn)
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(14hp), GPT5m Rivals(you,18hp)",
  "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": "T5 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Gloomlake Verge",
      "index": 0,
      "action": "land",
      "id": "p5"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Deep-Cavern Bat",
      "index": 1,
      "action": "cast",
      "id": "p14",
      "power": "1",
      "toughness": "1"
    }
  ]
}
Haiku AnalystmcpPass
raw
choose_action(answer=false)
{
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p5, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p5, ignored index=0"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p25, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p25, ignored index=0"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=1, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_1"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "actions_passed": 0,
  "land_drops_used": 1,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(14hp), GPT5m Rivals(you,18hp)",
  "context": "T5 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
Haiku Analystllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,14hp), GPT5m Rivals(18hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 3,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 4,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T5 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{B}",
      "name": "Grim Bauble",
      "index": 0,
      "action": "cast",
      "id": "p4"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Nowhere to Run",
      "index": 1,
      "action": "cast",
      "id": "p7"
    },
    {
      "mana_cost": "{B}",
      "name": "Grim Bauble",
      "index": 2,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Starting Town",
      "index": 3,
      "action": "land",
      "id": "p18"
    }
  ]
}
thinkingHaiku Analyst
Now it's turn 5. I have 3 untapped lands and can play a land too. I have Grim Bauble, Nowhere to Run options. I should play the land first, then cast spells. Let me play Starting Town.
llm
choose_action(id=p18)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_3"
}
thinkingHaiku Analyst
Good, I have 3 untapped lands. Let me cast Grim Bauble first.
mcpCast Grim Bauble {B}
raw
choose_action(id=p4)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
Grim Bauble has an ability choice. Let me check what that is.
thinkingHaiku Analyst
Wait, this is asking about Hallowed Fountain's abilities, not Grim Bauble. Let me look at the game state to understand what I'm casting.
llm
get_game_state()
{
  "phase": "Precombat Main",
  "priority_player": "Haiku Analyst",
  "cursor": 9,
  "stack": [
    {
      "name": "Grim Bauble",
      "rules": [
        "When {this} enters, target creature an opponent controls gets -2/-2 until end of turn.",
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top in any order.)"
      ],
      "id": "p21"
    }
  ],
  "active_player": "Haiku Analyst",
  "players": [
    {
      "hand_size": 5,
      "graveyard": [
        {
          "name": "Sunpearl Kirin",
          "id": "p6"
        },
        {
          "name": "Boomerang Basics",
          "id": "p10"
        }
      ],
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Hallowed Fountain",
          "id": "p1"
        },
        {
          "tapped": false,
          "name": "Godless Shrine",
          "id": "p2"
        },
        {
          "tapped": false,
          "name": "Hallowed Fountain",
          "id": "p3"
        },
        {
          "tapped": false,
          "name": "Nowhere to Run",
          "id": "p14"
        },
        {
          "tapped": true,
          "name": "Starting Town",
          "id": "p18"
        }
      ],
      "name": "Haiku Analyst",
      "library_size": 47,
      "life": 14,
      "hand": [
        {
          "mana_cost": "{2}{U}{B}",
          "name": "Kaito, Bane of Nightmares",
          "id": "p9"
        },
        {
          "mana_cost": "{B}",
          "name": "Grim Bauble",
          "id": "p5"
        },
        {
          "mana_cost": "{1}{B}",
          "name": "Nowhere to Run",
          "id": "p7",
          "playable": true
        },
        {
          "mana_cost": "{2}{U}{B}",
          "name": "Kaito, Bane of Nightmares",
          "id": "p13"
        },
        {
          "mana_cost": "{2}{U}{B}",
          "name": "Kaito, Bane of Nightmares",
          "id": "p8"
        }
      ]
    },
    {
      "hand_size": 5,
      "graveyard": [
        {
          "name": "Requiting Hex",
          "id": "p12"
        },
        {
          "name": "Deep-Cavern Bat",
          "id": "p16"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Swamp",
          "id": "p11"
        },
        {
          "tapped": true,
          "name": "Watery Grave",
          "id": "p15"
        },
        {
          "tapped": true,
          "name": "Gloomlake Verge",
          "id": "p19"
        },
        {
          "tapped": false,
          "name": "Preacher of the Schism",
          "summoning_sickness": true,
          "id": "p20",
          "power": "2",
          "toughness": "4"
        }
      ],
      "name": "GPT5m Rivals",
      "library_size": 47,
      "life": 18
    }
  ],
  "available": true,
  "step": "Precombat Main",
  "turn": 5
}
thinkingHaiku Analyst
Perfect! I see the stack has Grim Bauble (p21) on it, which is triggering now and asks me to target a creature. The opponent has "Preacher of the Schism" (2/4) which is a good target. But wait, the action is asking me about Hallowed Fountain's abilities—that doesn't make sense. Let me cancel this and get back to choosing. Actually, looking at the stack, Grim Bauble is on the stack with "When {this} enters, target creature an opponent controls gets -2/-2 until end of turn." I need to target that opponent creature. Let me pass this ability query and see if it resolves to a targeting prompt.
llm
pass_priority()
{
  "actions_passed": 0,
  "land_drops_used": 1,
  "action_type": "GAME_CHOOSE_ABILITY",
  "players": "Haiku Analyst(you,14hp), GPT5m Rivals(18hp)",
  "context": "T5 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "untapped_lands": 3,
  "respond_with": "index=N",
  "message": "Choose spell or ability to playHallowed Fountain",
  "choices": [
    {
      "index": 0,
      "description": "1. {T}: Add {W}."
    },
    {
      "index": 1,
      "description": "2. {T}: Add {U}."
    }
  ],
  "action_pending": true
}
thinkingHaiku Analyst
This is still asking about Hallowed Fountain. That's very odd. Let me look at the card text more carefully. Actually, I think the system is confused. Let me try choosing index 0 or 1 to see if it advances, or let me get oracle text for Grim Bauble.
llm
get_oracle_text(card_name=Grim Bauble)
{
  "success": true,
  "name": "Grim Bauble",
  "rules": [
    "When {this} enters, target creature an opponent controls gets -2/-2 until end of turn.",
    "{2}{B}, {T}, Sacrifice {this}: Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top in any order.)"
  ]
}
thinkingHaiku Analyst
Grim Bauble has an enter trigger, not an ability choice. The interface is showing me Hallowed Fountain mana abilities which doesn't match. Let me try choosing index 0 to see what happens.
mcp1. {T}: Add {W}.
raw
choose_action(index=0)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_0"
}
thinkingHaiku Analyst
I now have white mana in my pool from activating Hallowed Fountain. It seems the interface was asking me to choose which mana ability to use on the land I'm casting with, not a choice on Grim Bauble itself. This is confusing but let me continue. I have white mana now but I need black for my spells. Let me pass this and see if a targeting prompt comes up for Grim Bauble's enter ability.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Still asking if I want to play instants. Let me check the game state again to see what happened.
llm
get_game_state()
{
  "phase": "Precombat Main",
  "priority_player": "Haiku Analyst",
  "cursor": 10,
  "stack": [
    {
      "target_count": 1,
      "name": "Ability",
      "rules": [
        "When Grim Bauble enters, target creature an opponent controls gets -2/-2 until end of turn."
      ],
      "id": "p22"
    }
  ],
  "active_player": "Haiku Analyst",
  "players": [
    {
      "hand_size": 5,
      "graveyard": [
        {
          "name": "Sunpearl Kirin",
          "id": "p6"
        },
        {
          "name": "Boomerang Basics",
          "id": "p10"
        }
      ],
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": true,
          "name": "Hallowed Fountain",
          "id": "p1"
        },
        {
          "tapped": true,
          "name": "Godless Shrine",
          "id": "p2"
        },
        {
          "tapped": false,
          "name": "Hallowed Fountain",
          "id": "p3"
        },
        {
          "tapped": false,
          "name": "Nowhere to Run",
          "id": "p14"
        },
        {
          "tapped": true,
          "name": "Starting Town",
          "id": "p18"
        },
        {
          "tapped": false,
          "name": "Grim Bauble",
          "id": "p4"
        }
      ],
      "name": "Haiku Analyst",
      "library_size": 47,
      "mana_pool": {
        "W": 1
      },
      "life": 14,
      "hand": [
        {
          "mana_cost": "{2}{U}{B}",
          "name": "Kaito, Bane of Nightmares",
          "id": "p9"
        },
        {
          "mana_cost": "{B}",
          "name": "Grim Bauble",
          "id": "p5"
        },
        {
          "mana_cost": "{1}{B}",
          "name": "Nowhere to Run",
          "id": "p7"
        },
        {
          "mana_cost": "{2}{U}{B}",
          "name": "Kaito, Bane of Nightmares",
          "id": "p13"
        },
        {
          "mana_cost": "{2}{U}{B}",
          "name": "Kaito, Bane of Nightmares",
          "id": "p8"
        }
      ]
    },
    {
      "hand_size": 5,
      "graveyard": [
        {
          "name": "Requiting Hex",
          "id": "p12"
        },
        {
          "name": "Deep-Cavern Bat",
          "id": "p16"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Swamp",
          "id": "p11"
        },
        {
          "tapped": true,
          "name": "Watery Grave",
          "id": "p15"
        },
        {
          "tapped": true,
          "name": "Gloomlake Verge",
          "id": "p19"
        },
        {
          "tapped": false,
          "name": "Preacher of the Schism",
          "summoning_sickness": true,
          "id": "p20",
          "power": "2",
          "toughness": "4"
        }
      ],
      "name": "GPT5m Rivals",
      "library_size": 47,
      "life": 18
    }
  ],
  "available": true,
  "step": "Precombat Main",
  "turn": 5
}
thinkingHaiku Analyst
Good! Grim Bauble is now on the battlefield. The stack has an ability that needs a target (target_count:1). I need to target the opponent's creature. I have white mana in pool but need to target. Let me wait for the targeting prompt.
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(14hp), GPT5m Rivals(you,18hp)",
  "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": "T6 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{B}",
      "name": "Tragic Trajectory",
      "index": 0,
      "action": "cast",
      "id": "p6"
    },
    {
      "mana_cost": "{2}{U}",
      "name": "Tishana's Tidebinder",
      "index": 1,
      "action": "cast",
      "id": "p12",
      "power": "3",
      "toughness": "2"
    },
    {
      "name": "Island",
      "index": 2,
      "action": "land",
      "id": "p28"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Deep-Cavern Bat",
      "index": 3,
      "action": "cast",
      "id": "p14",
      "power": "1",
      "toughness": "1"
    }
  ]
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=1, mana_plan=[], attackers=[], blockers=[], id=p12, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_1",
  "warning": "Both id and index provided; used id=p12, ignored index=1"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_0"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "actions_passed": 0,
  "land_drops_used": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(14hp), GPT5m Rivals(you,18hp)",
  "context": "T6 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
GPT5m Rivalsllm
pass_priority(until=declare_attackers)
{
  "action_type": "GAME_TARGET",
  "players": "Haiku Analyst(14hp), GPT5m Rivals(you,18hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "can_cancel": true,
  "message": "Select up to one activated or triggered ability",
  "required": false,
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "context": "T6 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N, or answer=false to cancel",
  "choices": [
    {
      "name": "Ability",
      "target_type": "card",
      "index": 0,
      "id": "p31"
    }
  ]
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_0"
}
GPT5m Rivalsllm
pass_priority(until=declare_attackers)
{
  "actions_passed": 0,
  "land_drops_used": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(14hp), GPT5m Rivals(you,18hp)",
  "context": "T6 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
GPT5m Rivalsllm
pass_priority(until=declare_attackers)
{
  "combat_phase": "attackers",
  "actions_passed": 2,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(14hp), GPT5m Rivals(you,18hp)",
  "context": "T6 Combat/Declare Attackers (GPT5m Rivals)",
  "stop_reason": "combat",
  "response_type": "select",
  "respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
  "message": "Select attackers",
  "choices": [
    {
      "name": "Preacher of the Schism",
      "index": 0,
      "choice_type": "attacker",
      "id": "p25",
      "power": "2",
      "toughness": "4"
    },
    {
      "name": "All attack",
      "index": 1,
      "choice_type": "special",
      "id": "all"
    }
  ],
  "action_pending": true
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=["p25"], blockers=[], id=, text=)
{
  "declared": [
    "p25"
  ],
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "batch_attack"
}
GPT5m Rivalsllm
pass_priority(until=declare_blockers)
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(14hp), GPT5m Rivals(you,18hp)",
  "context": "T6 Combat/Declare Attackers (GPT5m Rivals)",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
Haiku Analystllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,12hp), GPT5m Rivals(17hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 4,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 12,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T6 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{1}{W}",
      "name": "Sunpearl Kirin",
      "index": 0,
      "action": "cast",
      "id": "p23",
      "power": "2",
      "toughness": "1"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Nowhere to Run",
      "index": 1,
      "action": "cast",
      "id": "p7"
    },
    {
      "mana_cost": "{2}{U}{B}",
      "name": "Kaito, Bane of Nightmares",
      "index": 2,
      "action": "cast",
      "id": "p13"
    },
    {
      "name": "Grim Bauble",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. <i>(Loo..."
      ],
      "id": "p4"
    },
    {
      "mana_cost": "{B}",
      "name": "Grim Bauble",
      "index": 4,
      "action": "cast",
      "id": "p5"
    },
    {
      "mana_cost": "{2}{U}{B}",
      "name": "Kaito, Bane of Nightmares",
      "index": 5,
      "action": "cast",
      "id": "p8"
    },
    {
      "mana_cost": "{2}{U}{B}",
      "name": "Kaito, Bane of Nightmares",
      "index": 6,
      "action": "cast",
      "id": "p9"
    }
  ]
}
thinkingHaiku Analyst
Interesting—we're now at turn 6! It looks like the targeting of Grim Bauble's enter trigger was auto-resolved (probably targeted the Preacher). The game has moved to T6 precombat main and I can see new cards available—Sunpearl Kirin appeared in my hand somehow! And the opponent is now at 17 life (down from 18) and I'm at 12 life (down from 14). This suggests some combat happened and I took 2 damage. Let me assess: - I have 4 untapped lands - Kaito, Bane of Nightmares is castable (2UB) - I should cast Kaito now
mcp2
raw
choose_action(id=p13)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_2"
}
thinkingHaiku Analyst
Good, Kaito is cast. Let me continue playing. I have 2 more untapped lands so I can cast more spells.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Great! Kaito is now on the battlefield with planeswalker abilities. I can activate one of them. Let me check my options: - +1: Get an emblem with "Ninjas you control get..." (likely evasion) - -2: Tap target creature and put 2 stun counters on it - 0: Surveil 2 The -2 ability is strong for controlling the board. Let me activate that to tap their Preacher.
mcpActivate Kaito, Bane of Nightmares
raw
choose_action(id=p13)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
Perfect! Let me use the -2 ability (index 2) to tap and stun their creature.
mcp3. -2: Tap target creature. Put two stun counters on it.
raw
choose_action(index=2)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_2"
}
thinkingHaiku Analyst
Wait—there's a new creature! Tishana's Tidebinder (3/2) appeared. And Preacher is already tapped. I should stun the Tidebinder which is untapped and a threat.
mcpTishana's Tidebinder
raw
choose_action(id=p24)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_1"
}
thinkingHaiku Analyst
Good! Now I can continue. Let me pass this instant phase and continue playing spells.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Let me continue playing spells. Let me cast another spell - I'll cast Nowhere to Run to remove a threat.
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(12hp), GPT5m Rivals(you,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": "T7 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{B}",
      "name": "Tragic Trajectory",
      "index": 0,
      "action": "cast",
      "id": "p6"
    },
    {
      "name": "Island",
      "index": 1,
      "action": "land",
      "id": "p28"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Deep-Cavern Bat",
      "index": 2,
      "action": "cast",
      "id": "p14",
      "power": "1",
      "toughness": "1"
    },
    {
      "name": "Island",
      "index": 3,
      "action": "land",
      "id": "p32"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Floodpits Drowner",
      "index": 4,
      "action": "cast",
      "id": "p33",
      "power": "2",
      "toughness": "1"
    }
  ]
}
GPT5m Rivalsllm
get_oracle_text(object_ids=["p6","p14","p33"], card_name=, card_names=[], object_id=)
{
  "cards": [
    {
      "name": "Tragic Trajectory",
      "rules": [
        "Target creature gets -2/-2 until end of turn. Void &mdash; That creature gets -10/-10 until end of turn instead if a nonland permanent left the battlefield this turn or a spell was warped this turn.",
        "",
        "ICON_BADA nonland permanent left the battlefield this turn or a spell was warped this turn"
      ],
      "object_id": "p6"
    },
    {
      "name": "Deep-Cavern Bat",
      "rules": [
        "Flying",
        "Lifelink",
        "When {this} enters, look at target opponent's hand. You may exile a nonland card from it until {this} leaves the battlefield."
      ],
      "object_id": "p14"
    },
    {
      "name": "Floodpits Drowner",
      "rules": [
        "Flash",
        "Vigilance",
        "When {this} enters, tap target creature an opponent controls and put a stun counter on it.",
        "{1}{U}, {T}: Shuffle {this} and target creature with a stun counter on it into their owners' libraries."
      ],
      "object_id": "p33"
    }
  ],
  "success": true
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=2, mana_plan=[], attackers=[], blockers=[], id=p14, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_2",
  "warning": "Both id and index provided; used id=p14, ignored index=2"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(12hp), GPT5m Rivals(you,17hp)",
  "stop_reason": "pending_action_from_choose_action",
  "response_type": "select",
  "untapped_lands": 1,
  "message": "Play instants and activated abilities",
  "action_pending": true,
  "actions_passed": 0,
  "land_drops_used": 0,
  "context": "T7 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{B}",
      "name": "Requiting Hex",
      "index": 0,
      "action": "cast",
      "id": "p17"
    }
  ]
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p17, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_ASK. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p17, ignored index=0"
}
GPT5m Rivalsllm
get_oracle_text(object_ids=["p17"], card_name=, card_names=[], object_id=)
{
  "cards": [
    {
      "error": "not found",
      "object_id": "p17"
    }
  ],
  "success": true
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=true, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "yes"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_TARGET",
  "players": "Haiku Analyst(12hp), GPT5m Rivals(you,17hp)",
  "stop_reason": "pending_action_from_choose_action",
  "response_type": "index",
  "can_cancel": true,
  "untapped_lands": 1,
  "message": "Select a creature with mana value 2 or less",
  "required": false,
  "action_pending": true,
  "actions_passed": 0,
  "land_drops_used": 0,
  "context": "T7 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "respond_with": "id=\"pN\" or index=N, or answer=false to cancel",
  "choices": [
    {
      "name": "Deep-Cavern Bat",
      "target_type": "permanent",
      "index": 0,
      "id": "p14",
      "power": "1",
      "toughness": "1"
    }
  ]
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p14, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_0",
  "warning": "Both id and index provided; used id=p14, ignored index=0"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=1, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_1"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_TARGET",
  "players": "Haiku Analyst(12hp), GPT5m Rivals(you,17hp)",
  "stop_reason": "pending_action_from_choose_action",
  "response_type": "index",
  "can_cancel": false,
  "message": "Select a creature you control (to put a -1/-1 counter on)",
  "required": true,
  "action_pending": true,
  "actions_passed": 0,
  "land_drops_used": 0,
  "context": "T7 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "respond_with": "id=\"pN\" or index=N",
  "choices": [
    {
      "name": "Preacher of the Schism",
      "target_type": "permanent",
      "index": 0,
      "id": "p25",
      "power": "2",
      "toughness": "4"
    },
    {
      "name": "Deep-Cavern Bat",
      "target_type": "permanent",
      "index": 1,
      "id": "p14",
      "power": "1",
      "toughness": "1"
    },
    {
      "tapped": true,
      "name": "Tishana's Tidebinder",
      "target_type": "permanent",
      "index": 2,
      "id": "p12",
      "power": "3",
      "toughness": "2"
    }
  ]
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p25, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_0",
  "warning": "Both id and index provided; used id=p25, ignored index=0"
}
GPT5m Rivalsllm
pass_priority(until=declare_attackers)
{
  "actions_passed": 0,
  "land_drops_used": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(12hp), GPT5m Rivals(you,17hp)",
  "context": "T7 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
GPT5m Rivalsllm
pass_priority(until=declare_attackers)
{
  "combat_phase": "attackers",
  "actions_passed": 3,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(12hp), GPT5m Rivals(you,19hp)",
  "context": "T7 Combat/Declare Attackers (GPT5m Rivals)",
  "stop_reason": "combat",
  "response_type": "select",
  "respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
  "message": "Select attackers",
  "choices": [
    {
      "name": "Preacher of the Schism",
      "index": 0,
      "choice_type": "attacker",
      "id": "p25",
      "power": "1",
      "toughness": "3"
    },
    {
      "name": "All attack",
      "index": 1,
      "choice_type": "special",
      "id": "all"
    }
  ],
  "action_pending": true
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=["p25"], blockers=[], id=, text=)
{
  "declared": [
    "p25"
  ],
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "batch_attack",
  "interrupted": true
}
GPT5m Rivalsllm
pass_priority(until=declare_blockers)
{
  "action_type": "GAME_TARGET",
  "players": "Haiku Analyst(12hp), GPT5m Rivals(you,19hp)",
  "stop_reason": "pending_action_from_choose_action",
  "response_type": "index",
  "can_cancel": false,
  "message": "Select a player, planeswalker, or battle to attack",
  "required": true,
  "action_pending": true,
  "actions_passed": 0,
  "context": "T7 Combat/Declare Attackers (GPT5m Rivals)",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "respond_with": "id=\"pN\" or index=N",
  "choices": [
    {
      "name": "Haiku Analyst",
      "target_type": "player",
      "index": 0,
      "id": "p1"
    },
    {
      "controller": "Haiku Analyst",
      "name": "Kaito, Bane of Nightmares",
      "target_type": "permanent",
      "index": 1,
      "id": "p23"
    }
  ]
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p1, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_0",
  "warning": "Both id and index provided; used id=p1, ignored index=0"
}
GPT5m Rivalsllm
pass_priority(until=declare_blockers)
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(12hp), GPT5m Rivals(you,19hp)",
  "context": "T7 Combat/Declare Attackers (GPT5m Rivals)",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Select attackers",
  "action_pending": true
}
GPT5m Rivalsllm
choose_action(amount=0, answer=true, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "confirmed"
}
GPT5m Rivalsllm
pass_priority(until=declare_blockers)
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(12hp), GPT5m Rivals(you,19hp)",
  "context": "T7 Combat/Declare Attackers (GPT5m Rivals)",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
GPT5m Rivalsllm
pass_priority(until=declare_blockers)
{
  "actions_passed": 2,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(12hp), GPT5m Rivals(you,18hp)",
  "context": "T7 Combat/Declare Blockers (GPT5m Rivals)",
  "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 Blockers"
}
Haiku Analystllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,11hp), GPT5m Rivals(18hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 4,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 12,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T7 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{1}{W}",
      "name": "Sunpearl Kirin",
      "index": 0,
      "action": "cast",
      "id": "p23",
      "power": "2",
      "toughness": "1"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Nowhere to Run",
      "index": 1,
      "action": "cast",
      "id": "p7"
    },
    {
      "name": "Grim Bauble",
      "index": 2,
      "action": "activate",
      "playable_abilities": [
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. <i>(Loo..."
      ],
      "id": "p4"
    },
    {
      "name": "Kaito, Bane of Nightmares",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "+1: You get an emblem with \"Ninjas you control ge...",
        "-2: Tap target creature. Put two stun counters on...",
        "0: Surveil 2. <i>(Look at the top two cards of yo..."
      ],
      "id": "p13"
    },
    {
      "name": "Godless Shrine",
      "index": 4,
      "action": "land",
      "id": "p26"
    },
    {
      "mana_cost": "{B}",
      "name": "Grim Bauble",
      "index": 5,
      "action": "cast",
      "id": "p5"
    },
    {
      "mana_cost": "{2}{U}{B}",
      "name": "Kaito, Bane of Nightmares",
      "index": 6,
      "action": "cast",
      "id": "p8"
    },
    {
      "mana_cost": "{2}{U}{B}",
      "name": "Kaito, Bane of Nightmares",
      "index": 7,
      "action": "cast",
      "id": "p9"
    }
  ]
}
thinkingHaiku Analyst
Now it's T7. I took 1 damage (now at 11 hp) and opponent is at 18 hp. I can play: - Sunpearl Kirin (1W) - creature - Nowhere to Run (1B) - removal/control - Kaito abilities - planeswalker - Land - Godless Shrine - Grim Bauble (B) - creature/utility Let me cast Sunpearl Kirin first for tempo.
mcp0
raw
choose_action(id=p23)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
Good! Now I can cast Nowhere to Run. Let me do that to lock down a creature.
mcpCast Nowhere to Run {1}{B}
raw
choose_action(id=p7)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
Haiku AnalystmcpPass
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 handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Both creatures are tapped now (probably from previous stun effects). Preacher is 1/3 (weakened somehow) and Tidebinder is 3/2. I'll target the Tidebinder which is more of a threat.
mcpTishana's Tidebinder
raw
choose_action(id=p24)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_1"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Let me continue playing. I'll now move to combat. Let me pass this main phase.
mcpPass
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 handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Wait, there's a target pending. Let me check what it is.
thinkingHaiku Analyst
This is an "up to one" target - I can decline. This is probably from Sunpearl Kirin's ability. The Kirin has a triggered ability that affects Ninja spells. Since this is optional, I'll pass on it for now.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "cancelled"
}
thinkingHaiku Analyst
Let me move forward. I'll pass this.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I can still play a land or activate Kaito. Let me play the land.
mcpPlay Godless Shrine
raw
choose_action(id=p26)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_ASK. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_1"
}
thinkingHaiku Analyst
I'm at 11 hp. Paying 2 life would put me to 9. But I need the untapped mana. Let me pay it.
mcptrue
raw
choose_action(answer=true)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "yes"
}
thinkingHaiku Analyst
Good! Now I'm at 9 hp and have 1 untapped land. I can cast Grim Bauble (B) or activate Kaito. Let me cast Grim Bauble.
mcpCast Grim Bauble {B}
raw
choose_action(id=p5)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_1"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Now let me move to combat. I'll pass this.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I can activate Kaito. Let me use the +1 ability to get the emblem that powers up my Ninjas.
mcpActivate Kaito, Bane of Nightmares
raw
choose_action(id=p13)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
Perfect! I'll activate the +1 ability to buff my Ninjas.
mcp1. +1: You get an emblem with "Ninjas you control get +1/+1."
raw
choose_action(index=0)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_0"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
No more spells to play. Let me pass to move to combat.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Good! Kaito is now 4/5 (buffed by the emblem). I can attack with him or all creatures. Let me attack with all.
mcpAttack with all (Kaito, Bane of Nightmares 4/5)
raw
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "batch_attack"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Now it's the opponent's turn to declare blockers. I'll pass.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Excellent! I dealt 4 damage (opponent went from 18 to 14). Combat's done, let me continue.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Now I'm in postcombat main. I have no more plays. Let me end my turn.
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(9hp), GPT5m Rivals(you,14hp)",
  "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 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{B}",
      "name": "Tragic Trajectory",
      "index": 0,
      "action": "cast",
      "id": "p6"
    },
    {
      "name": "Island",
      "index": 1,
      "action": "land",
      "id": "p28"
    },
    {
      "name": "Island",
      "index": 2,
      "action": "land",
      "id": "p32"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Floodpits Drowner",
      "index": 3,
      "action": "cast",
      "id": "p33",
      "power": "2",
      "toughness": "1"
    },
    {
      "name": "Swamp",
      "index": 4,
      "action": "land",
      "id": "p36"
    }
  ]
}
Haiku AnalystmcpPass
raw
choose_action(answer=false)
{
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=3, mana_plan=[], attackers=[], blockers=[], id=p33, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_3",
  "warning": "Both id and index provided; used id=p33, ignored index=3"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "actions_passed": 0,
  "land_drops_used": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(9hp), GPT5m Rivals(you,14hp)",
  "context": "T8 Precombat Main/Precombat Main (GPT5m Rivals) YOUR_MAIN",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "untapped_lands": 1,
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
Haiku Analystllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,9hp), GPT5m Rivals(14hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 5,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 5,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T8 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Grim Bauble",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. <i>(Loo..."
      ],
      "id": "p4"
    },
    {
      "name": "Kaito, Bane of Nightmares",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "+1: You get an emblem with \"Ninjas you control ge...",
        "-2: Tap target creature. Put two stun counters on...",
        "0: Surveil 2. <i>(Look at the top two cards of yo..."
      ],
      "id": "p13"
    },
    {
      "mana_cost": "{2}{U}{B}",
      "name": "Kaito, Bane of Nightmares",
      "index": 2,
      "action": "cast",
      "id": "p8"
    },
    {
      "name": "Grim Bauble",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. <i>(Loo..."
      ],
      "id": "p5"
    },
    {
      "mana_cost": "{2}{U}{B}",
      "name": "Kaito, Bane of Nightmares",
      "index": 4,
      "action": "cast",
      "id": "p9"
    }
  ]
}
thinkingHaiku Analyst
Great! I'm back on turn 8. I can cast Kaito again! I have 5 untapped lands and the mana cost is {2}{U}{B}. Let me cast one of the Kaito copies.
llm
choose_action(id=p8)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_2"
}
Haiku AnalystmcpPass
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 handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I cast a second Kaito, so I need to sacrifice one due to the Legendary Rule. I'll keep the newer one (p8) and sacrifice the old one (p13).
mcpKaito, Bane of Nightmares
raw
choose_action(id=p13)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_1"
}
thinkingHaiku Analyst
Wait, p13 still exists? Let me check the board state.
llm
get_game_state()
{
  "phase": "Precombat Main",
  "priority_player": "Haiku Analyst",
  "cursor": 23,
  "stack": [],
  "active_player": "Haiku Analyst",
  "players": [
    {
      "hand_size": 2,
      "graveyard": [
        {
          "name": "Sunpearl Kirin",
          "id": "p6"
        },
        {
          "name": "Boomerang Basics",
          "id": "p10"
        },
        {
          "name": "Kaito, Bane of Nightmares",
          "id": "p8"
        }
      ],
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": true,
          "name": "Hallowed Fountain",
          "id": "p1"
        },
        {
          "tapped": true,
          "name": "Godless Shrine",
          "id": "p2"
        },
        {
          "tapped": false,
          "name": "Hallowed Fountain",
          "id": "p3"
        },
        {
          "tapped": false,
          "name": "Nowhere to Run",
          "id": "p14"
        },
        {
          "tapped": true,
          "name": "Starting Town",
          "id": "p18"
        },
        {
          "tapped": false,
          "name": "Grim Bauble",
          "id": "p4"
        },
        {
          "tapped": false,
          "counters": {
            "loyalty": 3
          },
          "name": "Kaito, Bane of Nightmares",
          "id": "p13",
          "power": "4",
          "toughness": "5"
        },
        {
          "tapped": false,
          "name": "Nowhere to Run",
          "id": "p7"
        },
        {
          "tapped": true,
          "name": "Sunpearl Kirin",
          "id": "p23",
          "power": "2",
          "toughness": "1"
        },
        {
          "tapped": true,
          "name": "Godless Shrine",
          "id": "p26"
        },
        {
          "tapped": false,
          "name": "Grim Bauble",
          "id": "p5"
        }
      ],
      "commanders": [
        "Emblem Kaito"
      ],
      "name": "Haiku Analyst",
      "library_size": 44,
      "life": 9,
      "hand": [
        {
          "mana_cost": "{2}{U}{B}",
          "name": "Kaito, Bane of Nightmares",
          "id": "p9"
        },
        {
          "mana_cost": "{W}{U}",
          "name": "No More Lies",
          "id": "p33"
        }
      ]
    },
    {
      "hand_size": 6,
      "graveyard": [
        {
          "name": "Requiting Hex",
          "id": "p12"
        },
        {
          "name": "Deep-Cavern Bat",
          "id": "p16"
        },
        {
          "name": "Deep-Cavern Bat",
          "id": "p27"
        },
        {
          "name": "Requiting Hex",
          "id": "p28"
        },
        {
          "name": "Tishana's Tidebinder",
          "id": "p24"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Swamp",
          "id": "p11"
        },
        {
          "tapped": true,
          "name": "Watery Grave",
          "id": "p15"
        },
        {
          "tapped": false,
          "name": "Gloomlake Verge",
          "id": "p19"
        },
        {
          "tapped": false,
          "counters": {
            "-1/-1": 1
          },
          "name": "Preacher of the Schism",
          "id": "p20",
          "power": "1",
          "toughness": "3"
        },
        {
          "tapped": false,
          "name": "Floodpits Drowner",
          "summoning_sickness": true,
          "id": "p34",
          "power": "2",
          "toughness": "1"
        }
      ],
      "name": "GPT5m Rivals",
      "library_size": 42,
      "life": 14
    }
  ],
  "available": true,
  "step": "Precombat Main",
  "turn": 8
}
thinkingHaiku Analyst
I see! P13 is still there with 3 loyalty. The Kaito in my hand (p9) went to the graveyard (p8) instead. I sacrificed p8 as the new Kaito. Now I can activate p13. Let me use the +1 ability again to get another emblem.
mcpActivate Kaito, Bane of Nightmares
raw
choose_action(id=p13)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
I'll take the +1 ability to pump my Ninjas further.
mcp1. +1: You get an emblem with "Ninjas you control get +1/+1."
raw
choose_action(index=0)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_0"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I'm low on untapped lands. I have No More Lies ({W}{U}) in hand but only 1 untapped land. Let me just end my main phase and move to combat.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Perfect! Kaito is now 5/6 (buffed twice by the emblem). Let me declare all attackers.
mcpAttack with all (Kaito, Bane of Nightmares 5/6)
raw
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "batch_attack"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "combat_phase": "blockers",
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(9hp), GPT5m Rivals(you,14hp)",
  "stop_reason": "combat",
  "response_type": "select",
  "untapped_lands": 1,
  "message": "Select blockers",
  "action_pending": true,
  "actions_passed": 2,
  "context": "T8 Combat/Declare Blockers (Haiku Analyst)",
  "respond_with": "blockers=[{\"id\":\"pN\",\"blocks\":\"pM\"},...] or answer=true (confirm) or answer=false (skip)",
  "choices": [
    {
      "name": "Preacher of the Schism",
      "index": 0,
      "choice_type": "blocker",
      "id": "p25",
      "power": "1",
      "toughness": "3"
    },
    {
      "name": "Floodpits Drowner",
      "index": 1,
      "choice_type": "blocker",
      "id": "p33",
      "power": "2",
      "toughness": "1"
    }
  ],
  "incoming_attackers": [
    {
      "name": "Kaito, Bane of Nightmares",
      "id": "p23",
      "power": "5",
      "toughness": "6"
    }
  ]
}
Haiku AnalystmcpPass
raw
choose_action(answer=false)
{
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[":{"], id=, text=)
{
  "retryable": false,
  "success": false,
  "error_code": "invalid_blockers",
  "error": "Invalid blockers: blockers entry 0 has empty id in: :{. Expected: [\"blocker:attacker\",...]"
}
GPT5m Rivalsllm
pass_priority(until=declare_blockers)
{
  "combat_phase": "blockers",
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(9hp), GPT5m Rivals(you,14hp)",
  "stop_reason": "combat",
  "response_type": "select",
  "untapped_lands": 1,
  "message": "Select blockers",
  "action_pending": true,
  "actions_passed": 0,
  "context": "T8 Combat/Declare Blockers (Haiku Analyst)",
  "respond_with": "blockers=[{\"id\":\"pN\",\"blocks\":\"pM\"},...] or answer=true (confirm) or answer=false (skip)",
  "choices": [
    {
      "name": "Preacher of the Schism",
      "index": 0,
      "choice_type": "blocker",
      "id": "p25",
      "power": "1",
      "toughness": "3"
    },
    {
      "name": "Floodpits Drowner",
      "index": 1,
      "choice_type": "blocker",
      "id": "p33",
      "power": "2",
      "toughness": "1"
    }
  ],
  "incoming_attackers": [
    {
      "name": "Kaito, Bane of Nightmares",
      "id": "p23",
      "power": "5",
      "toughness": "6"
    }
  ]
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=["p33:p23"], id=, text=)
{
  "declared": [
    {
      "id": "p33",
      "blocks": "p23"
    }
  ],
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "batch_block"
}
Haiku Analystllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,9hp), GPT5m Rivals(14hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 5,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 6,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T9 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Grim Bauble",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. <i>(Loo..."
      ],
      "id": "p4"
    },
    {
      "name": "Kaito, Bane of Nightmares",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "+1: You get an emblem with \"Ninjas you control ge...",
        "-2: Tap target creature. Put two stun counters on...",
        "0: Surveil 2. <i>(Look at the top two cards of yo..."
      ],
      "id": "p13"
    },
    {
      "mana_cost": "{B}",
      "name": "Grim Bauble",
      "index": 2,
      "action": "cast",
      "id": "p36"
    },
    {
      "name": "Grim Bauble",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. <i>(Loo..."
      ],
      "id": "p5"
    },
    {
      "mana_cost": "{2}{U}{B}",
      "name": "Kaito, Bane of Nightmares",
      "index": 4,
      "action": "cast",
      "id": "p9"
    }
  ]
}
thinkingHaiku Analyst
Now I'm on turn 9. Great! I can see I have a Grim Bauble in hand (p36 for {B}). Let me first cast that, then think about my turn.
llm
choose_action(id=p36)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_2"
}
thinkingHaiku Analyst
Good! Now I have 4 untapped lands. I can cast No More Lies ({W}{U}). Let me play it.
mcpCast No More Lies {W}{U}
raw
choose_action(id=p33)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
No More Lies lets me counter a spell. The only thing I see on the stack is the Grim Bauble I just cast (p38). That's my own spell, so I shouldn't counter it. Let me cancel this.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "cancelled"
}
thinkingHaiku Analyst
I still have No More Lies available. Let me think—it's a counter spell, and I should save it for opponent interaction. For now, let me focus on my board. I'll activate one of the Grim Baubles to surveil and dig for threats.
mcpActivate Grim Bauble
raw
choose_action(id=p4)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_1"
}
Haiku AnalystmcpPass
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 handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I'm surveiling 2 cards. I see Watery Grave and Boomerang Basics. Watery Grave is a dual land (useful for mana), and Boomerang Basics is card draw. Let me put both into my graveyard since I'm surveiling. Actually, I can choose which ones to put into the graveyard. Let me put Boomerang Basics there since it fills my GY for Murktide value potentially.
mcpBoomerang Basics
raw
choose_action(id=p41)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_1"
}
thinkingHaiku Analyst
I'll put the Watery Grave into the graveyard too. This helps me fill my GY further.
mcpWatery Grave
raw
choose_action(id=p40)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_0"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I'm out of playable cards and mana. Let me pass to combat.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Good! I can activate Kaito. Let me use the +1 to get another emblem boost for my Ninjas.
mcpActivate Kaito, Bane of Nightmares
raw
choose_action(id=p13)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
I'll take the +1 to boost my Ninjas.
mcp1. +1: You get an emblem with "Ninjas you control get +1/+1."
raw
choose_action(index=0)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_0"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Now I'm done with my main phase. Let me proceed to combat.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Excellent! I have Kaito (6/7 now with the emblem boost), Sunpearl Kirin (2/1), and all my threats. My opponent has 14 hp. Let me attack with everything. I'll use the "all" option to declare all my creatures as attackers.
mcpAttack with all (Kaito, Bane of Nightmares 6/7, Sunpearl Kirin 2/1)
raw
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "batch_attack"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "combat_phase": "blockers",
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(9hp), GPT5m Rivals(you,14hp)",
  "stop_reason": "combat",
  "response_type": "select",
  "untapped_lands": 3,
  "message": "Select blockers",
  "action_pending": true,
  "actions_passed": 2,
  "context": "T9 Combat/Declare Blockers (Haiku Analyst)",
  "respond_with": "blockers=[{\"id\":\"pN\",\"blocks\":\"pM\"},...] or answer=true (confirm) or answer=false (skip)",
  "choices": [
    {
      "name": "Preacher of the Schism",
      "index": 0,
      "choice_type": "blocker",
      "id": "p25",
      "power": "-1",
      "toughness": "1"
    }
  ],
  "incoming_attackers": [
    {
      "name": "Kaito, Bane of Nightmares",
      "id": "p23",
      "power": "6",
      "toughness": "7"
    },
    {
      "name": "Sunpearl Kirin",
      "id": "p37",
      "power": "2",
      "toughness": "1"
    }
  ]
}
Haiku AnalystmcpPass
raw
choose_action(answer=false)
{
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=["p25:p23"], id=, text=)
{
  "declared": [
    {
      "id": "p25",
      "blocks": "p23"
    }
  ],
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "batch_block"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "action_type": "GAME_TARGET",
  "players": "Haiku Analyst(9hp), GPT5m Rivals(you,12hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "can_cancel": false,
  "untapped_lands": 3,
  "message": "Select a card to discard",
  "required": true,
  "action_pending": true,
  "actions_passed": 1,
  "context": "T10 End/Cleanup (GPT5m Rivals)",
  "respond_with": "id=\"pN\" or index=N",
  "choices": [
    {
      "name": "Enduring Curiosity",
      "target_type": "card",
      "index": 0,
      "id": "p11"
    },
    {
      "name": "Tragic Trajectory",
      "target_type": "card",
      "index": 1,
      "id": "p6"
    },
    {
      "name": "Kaito, Bane of Nightmares",
      "target_type": "card",
      "index": 2,
      "id": "p43"
    },
    {
      "name": "Enduring Curiosity",
      "target_type": "card",
      "index": 3,
      "id": "p39"
    },
    {
      "name": "Island",
      "target_type": "card",
      "index": 4,
      "id": "p28"
    },
    {
      "name": "Island",
      "target_type": "card",
      "index": 5,
      "id": "p32"
    },
    {
      "name": "Swamp",
      "target_type": "card",
      "index": 6,
      "id": "p36"
    },
    {
      "name": "Flitterwing Nuisance",
      "target_type": "card",
      "index": 7,
      "id": "p44"
    }
  ]
}
Haiku Analystllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,9hp), GPT5m Rivals(12hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 5,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 6,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T10 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Stormchaser's Talent",
      "index": 0,
      "action": "cast",
      "id": "p42"
    },
    {
      "name": "Kaito, Bane of Nightmares",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "+1: You get an emblem with \"Ninjas you control ge...",
        "-2: Tap target creature. Put two stun counters on...",
        "0: Surveil 2. <i>(Look at the top two cards of yo..."
      ],
      "id": "p13"
    },
    {
      "name": "Grim Bauble",
      "index": 2,
      "action": "activate",
      "playable_abilities": [
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. <i>(Loo..."
      ],
      "id": "p36"
    },
    {
      "name": "Grim Bauble",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. <i>(Loo..."
      ],
      "id": "p5"
    },
    {
      "mana_cost": "{2}{U}{B}",
      "name": "Kaito, Bane of Nightmares",
      "index": 4,
      "action": "cast",
      "id": "p9"
    }
  ]
}
thinkingHaiku Analyst
Great! My opponent is down to 12 hp. I have several options: - Stormchaser's Talent (Aura, {U}) - Activate Kaito again - Activate Grim Baubles - Cast another Kaito for {2}{U}{B} Let me check what I have in hand and my current board state more carefully. I should cast Stormchaser's Talent to get more advantage. Let me play it.
llm
choose_action(id=p42)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
I need to pay for Stormchaser's Talent. Let me choose blue mana.
mcp1. {T}: Add {W}.
raw
choose_action(index=0)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_0"
}
thinkingHaiku Analyst
I have white mana in my pool. I need one more blue for No More Lies, but I don't have it right now. Let me continue with my activations and look for more plays. Let me pass for now.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=4, mana_plan=[], attackers=[], blockers=[], id=p28, text=)
{
  "success": true,
  "action_taken": "selected_target_4",
  "warning": "Both id and index provided; used id=p28, ignored index=4"
}
thinkingGPT5m Rivals
Passing to find out opponent's move — call pass_priority when you want me to act next.
thinkingHaiku Analyst
I can activate Grim Bauble, but I'd need {2}{B}. I don't have black mana right now. Let me pass on these for now.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I can cast another Kaito for {2}{U}{B}. Let me do that! This will give me more planeswalker value and threats.
mcpCast Kaito, Bane of Nightmares {2}{U}{B}
raw
choose_action(id=p9)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_4"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku AnalystmcpPass
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 handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I need to choose which Kaito to keep. I'll keep the newer one (p9) since both are at the same power level.
mcpKaito, Bane of Nightmares
raw
choose_action(id=p9)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_0"
}
thinkingHaiku Analyst
Good! Now I can activate my new Kaito. Let me get another emblem.
mcpActivate Kaito, Bane of Nightmares
raw
choose_action(id=p9)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
I'll activate the +1 for another emblem.
mcp1. +1: You get an emblem with "Ninjas you control get +1/+1."
raw
choose_action(index=0)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_0"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Now I'm done with my main phase. Let me move to combat.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I'll attack with all available creatures.
mcpAttack with all (Sunpearl Kirin 2/1)
raw
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "batch_attack"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku Analystllm
pass_priority()
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,9hp), GPT5m Rivals(12hp)",
  "context": "T10 Combat/Declare Blockers (Haiku Analyst)",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
Haiku Analystllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Great! Combat is resolving and my opponent is at 10 hp now. Let me continue through combat.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku Analystllm
pass_priority()
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,9hp), GPT5m Rivals(10hp)",
  "context": "T11 Precombat Main/Precombat Main (GPT5m Rivals)",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(9hp), GPT5m Rivals(you,10hp)",
  "context": "T11 Combat/Declare Attackers (GPT5m Rivals)",
  "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": [
    {
      "mana_cost": "{1}{B}",
      "name": "Bitter Triumph",
      "index": 0,
      "action": "cast",
      "id": "p47"
    }
  ],
  "action_pending": true
}
Haiku Analystllm
choose_action(answer=false)
{
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m Rivalsllm
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p47, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p47, ignored index=0"
}
thinkingHaiku Analyst
Good! The turn is advancing to my opponent's main phase. Let me continue and see what develops.
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=2, mana_plan=[], attackers=[], blockers=[], id=p20, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_ASK. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_2",
  "warning": "Both id and index provided; used id=p20, ignored index=2"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=true, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "yes"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=5, mana_plan=[], attackers=[], blockers=[], id=p36, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_5",
  "warning": "Both id and index provided; used id=p36, ignored index=5"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=true, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "confirmed"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(9hp), GPT5m Rivals(you,10hp)",
  "context": "T11 Combat/Declare Attackers (GPT5m Rivals)",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "untapped_lands": 1,
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
Haiku Analystllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,9hp), GPT5m Rivals(10hp)",
  "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": "T11 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Stormchaser's Talent",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{3}{U}: Level 2"
      ],
      "id": "p42"
    },
    {
      "name": "Grim Bauble",
      "index": 1,
      "action": "activate",
      "playable_abilities": [
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. <i>(Loo..."
      ],
      "id": "p36"
    },
    {
      "name": "Gloomlake Verge",
      "index": 2,
      "action": "land",
      "id": "p46"
    },
    {
      "name": "Grim Bauble",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. <i>(Loo..."
      ],
      "id": "p5"
    }
  ]
}
thinkingHaiku Analyst
I have several options. Let me activate Stormchaser's Talent to level up. This improves my threats.
llm
choose_action(id=p42)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
Haiku AnalystmcpPass
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 handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I need to pick which Boomerang Basics to get back. I'll pick the first one.
mcpBoomerang Basics
raw
choose_action(id=p10)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_0"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Good! I got Boomerang Basics back. Let me play it to bounce something.
mcpCast Boomerang Basics {U}
raw
choose_action(id=p10)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
I need to pick which nonland permanent to bounce. Let me bounce one of my own Nowhere to Run enchantments to reuse it, as that cycle provides value. I'll bounce p14.
mcpNowhere to Run
raw
choose_action(id=p14)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_3"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
I can play Gloomlake Verge, but it's a land and I'm already at my land drop limit. Let me pass and move to combat.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Perfect! I can attack with both creatures. Let me attack with all.
mcpAttack with all (Sunpearl Kirin 2/1, Otter Token 2/2)
raw
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "batch_attack"
}
Haiku Analystllm
pass_priority()
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,9hp), GPT5m Rivals(10hp)",
  "context": "T11 Combat/Declare Attackers (Haiku Analyst)",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
Haiku Analystllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
Excellent! Combat damage reduced opponent to 6 hp. Now I need 4 more damage to win.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku Analystllm
pass_priority()
{
  "actions_passed": 0,
  "land_drops_used": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,9hp), GPT5m Rivals(6hp)",
  "context": "T11 Postcombat Main/Postcombat Main (Haiku Analyst) YOUR_MAIN",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "select",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play spells and abilities",
  "choices": [
    {
      "name": "Gloomlake Verge",
      "index": 0,
      "action": "land",
      "id": "p46"
    }
  ],
  "action_pending": true
}
Haiku Analystllm
choose_action(answer=false)
{
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p50, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p50, ignored index=0"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p11, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p11, ignored index=0"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=1, mana_plan=[], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_1"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=true, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=["p50","p32","p36"], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "confirmed"
}
Haiku Analystllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,9hp), GPT5m Rivals(6hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 5,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 4,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T12 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{W}",
      "name": "Nurturing Pixie",
      "index": 0,
      "action": "cast",
      "id": "p53",
      "power": "1",
      "toughness": "1"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Nowhere to Run",
      "index": 1,
      "action": "cast",
      "id": "p14"
    },
    {
      "mana_cost": "{3}{U}{U}",
      "name": "Quantum Riddler",
      "index": 2,
      "action": "cast",
      "id": "p52",
      "power": "4",
      "toughness": "6"
    },
    {
      "name": "Grim Bauble",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. <i>(Loo..."
      ],
      "id": "p36"
    },
    {
      "name": "Gloomlake Verge",
      "index": 4,
      "action": "land",
      "id": "p46"
    },
    {
      "name": "Grim Bauble",
      "index": 5,
      "action": "activate",
      "playable_abilities": [
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. <i>(Loo..."
      ],
      "id": "p5"
    }
  ]
}
thinkingHaiku Analyst
Good options here. Let me assess: opponent is at 6 hp. I need to close out the game. The Quantum Riddler (4/6) is a strong blocker but doesn't help me finish. Nurturing Pixie is a cheap threat. Nowhere to Run disrupts their threats. Let me play Nowhere to Run to lock down their best threat, then I can finish them next turn.
llm
choose_action(id=p14)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_1"
}
thinkingHaiku Analyst
I can cast No More Lies. Let me do that to get more value.
mcpCast No More Lies {W}{U}
raw
choose_action(id=p33)
{
  "next_action_pending": true,
  "next_action_type": "GAME_TARGET",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
thinkingHaiku Analyst
I can counter my own Nowhere to Run to improve my spell mix. Let me do that.
mcpNowhere to Run
raw
choose_action(index=0)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_0"
}
Haiku Analystmcp2. {T}, Pay 1 life: Add one mana of any color.
raw
choose_action(index=1)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_CHOICE",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_CHOICE. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_1"
}
thinkingHaiku Analyst
Let me add blue mana.
mcpBlue
raw
choose_action(index=1)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_choice_1"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku AnalystmcpPass
raw
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_ASK. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
No More Lies wants me to pay 3 mana. I don't have that right now. Let me decline.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "no"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku Analystllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,8hp), GPT5m Rivals(6hp)",
  "stop_reason": "pending_action_from_choose_action",
  "response_type": "select",
  "untapped_lands": 1,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 0,
  "land_drops_used": 0,
  "context": "T12 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{W}",
      "name": "Nurturing Pixie",
      "index": 0,
      "action": "cast",
      "id": "p53",
      "power": "1",
      "toughness": "1"
    },
    {
      "name": "Gloomlake Verge",
      "index": 1,
      "action": "land",
      "id": "p46"
    }
  ]
}
thinkingHaiku Analyst
Let me play Nurturing Pixie for a cheap threat.
llm
choose_action(id=p53)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
Haiku AnalystmcpPass
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 handle the pending GAME_TARGET. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
thinkingHaiku Analyst
The Otter Token is my best threat. Let me boost it with Nurturing Pixie.
mcpOtter Token
raw
choose_action(index=1)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_target_1"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku Analystllm
pass_priority()
{
  "actions_passed": 0,
  "land_drops_used": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,8hp), GPT5m Rivals(6hp)",
  "context": "T12 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "select",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play spells and abilities",
  "choices": [
    {
      "name": "Gloomlake Verge",
      "index": 0,
      "action": "land",
      "id": "p46"
    }
  ],
  "action_pending": true
}
thinkingHaiku Analyst
Let me play the land.
llm
choose_action(id=p46)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku Analystllm
pass_priority()
{
  "combat_phase": "declare_attackers",
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,8hp), GPT5m Rivals(6hp)",
  "stop_reason": "pending_action_from_choose_action",
  "response_type": "select",
  "untapped_lands": 1,
  "message": "Select attackers",
  "action_pending": true,
  "actions_passed": 0,
  "context": "T12 Combat/Declare Attackers (Haiku Analyst)",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
  "choices": [
    {
      "name": "Sunpearl Kirin",
      "index": 0,
      "choice_type": "attacker",
      "id": "p23",
      "power": "2",
      "toughness": "1"
    },
    {
      "name": "All attack",
      "index": 1,
      "choice_type": "special",
      "id": "all"
    }
  ]
}
thinkingHaiku Analyst
Opponent is at 6 hp. My Otter Token (now with a +1/+1 counter from Nurturing Pixie) is a 4/4. Let me attack with all my creatures to close out the game.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "batch_attack"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "combat_phase": "blockers",
  "actions_passed": 2,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(8hp), GPT5m Rivals(you,6hp)",
  "context": "T12 Combat/Declare Blockers (Haiku Analyst)",
  "stop_reason": "combat",
  "response_type": "select",
  "respond_with": "blockers=[{\"id\":\"pN\",\"blocks\":\"pM\"},...] or answer=true (confirm) or answer=false (skip)",
  "message": "Select blockers",
  "choices": [
    {
      "name": "Enduring Curiosity",
      "index": 0,
      "choice_type": "blocker",
      "id": "p11",
      "power": "4",
      "toughness": "3"
    }
  ],
  "action_pending": true,
  "incoming_attackers": [
    {
      "name": "Sunpearl Kirin",
      "id": "p37",
      "power": "2",
      "toughness": "1"
    }
  ]
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[":{ }"], id=, text=)
{
  "retryable": false,
  "success": false,
  "error_code": "invalid_blockers",
  "error": "Invalid blockers: blockers entry 0 has empty id in: :{  }. Expected: [\"blocker:attacker\",...]"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku Analystllm
pass_priority()
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,8hp), GPT5m Rivals(4hp)",
  "context": "T12 Combat/Combat Damage (Haiku Analyst)",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "untapped_lands": 1,
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
Haiku Analystllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku Analystllm
pass_priority()
{
  "actions_passed": 0,
  "land_drops_used": 1,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,8hp), GPT5m Rivals(4hp)",
  "context": "T12 Postcombat Main/Postcombat Main (Haiku Analyst) YOUR_MAIN",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "untapped_lands": 1,
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play spells and abilities",
  "action_pending": true
}
thinkingHaiku Analyst
Opponent is at 4 hp now. Let me pass and wait for their turn to see if they have a response or if they'll concede.
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=["p11:p37"], id=, text=)
{
  "declared": [],
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "batch_block",
  "failed": [
    {
      "reason": "attacker p37 is not a valid block target",
      "id": "p11"
    }
  ]
}
Haiku Analystllm
choose_action(answer=false)
{
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=3, mana_plan=["p50","p32","p36","p??"], attackers=[], blockers=[], id=p52, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_3",
  "warning": "Both id and index provided; used id=p52, ignored index=3",
  "mana_plan_set": true,
  "mana_plan_size": 4
}
Haiku Analystllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,8hp), GPT5m Rivals(4hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 6,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 3,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T13 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Stormchaser's Talent",
      "index": 0,
      "action": "activate",
      "playable_abilities": [
        "{5}{U}: Level 3"
      ],
      "id": "p42"
    },
    {
      "mana_cost": "{3}{U}{U}",
      "name": "Quantum Riddler",
      "index": 1,
      "action": "cast",
      "id": "p52",
      "power": "4",
      "toughness": "6"
    },
    {
      "name": "Grim Bauble",
      "index": 2,
      "action": "activate",
      "playable_abilities": [
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. <i>(Loo..."
      ],
      "id": "p36"
    },
    {
      "name": "Grim Bauble",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{2}{B}, {T}, Sacrifice {this}: Surveil 2. <i>(Loo..."
      ],
      "id": "p5"
    },
    {
      "name": "Island",
      "index": 4,
      "action": "land",
      "id": "p61"
    }
  ]
}
thinkingHaiku Analyst
Excellent position. At 4 hp, my opponent is very low. Let me check the board state to plan my next move.
llm
get_game_state()
{
  "phase": "Precombat Main",
  "priority_player": "Haiku Analyst",
  "cursor": 53,
  "stack": [],
  "active_player": "Haiku Analyst",
  "players": [
    {
      "hand_size": 2,
      "graveyard": [
        {
          "name": "Sunpearl Kirin",
          "id": "p6"
        },
        {
          "name": "Kaito, Bane of Nightmares",
          "id": "p8"
        },
        {
          "name": "Grim Bauble",
          "id": "p4"
        },
        {
          "name": "Boomerang Basics",
          "id": "p41"
        },
        {
          "name": "Watery Grave",
          "id": "p40"
        },
        {
          "name": "Kaito, Bane of Nightmares",
          "id": "p13"
        },
        {
          "name": "Kaito, Bane of Nightmares",
          "id": "p9"
        },
        {
          "name": "Boomerang Basics",
          "id": "p10"
        },
        {
          "name": "No More Lies",
          "id": "p33"
        }
      ],
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Hallowed Fountain",
          "id": "p1"
        },
        {
          "tapped": false,
          "name": "Godless Shrine",
          "id": "p2"
        },
        {
          "tapped": false,
          "name": "Hallowed Fountain",
          "id": "p3"
        },
        {
          "tapped": false,
          "name": "Starting Town",
          "id": "p18"
        },
        {
          "tapped": false,
          "name": "Nowhere to Run",
          "id": "p7"
        },
        {
          "tapped": false,
          "name": "Sunpearl Kirin",
          "id": "p23",
          "power": "2",
          "toughness": "1"
        },
        {
          "tapped": false,
          "name": "Godless Shrine",
          "id": "p26"
        },
        {
          "tapped": false,
          "name": "Grim Bauble",
          "id": "p5"
        },
        {
          "tapped": false,
          "name": "Grim Bauble",
          "id": "p36"
        },
        {
          "tapped": false,
          "name": "Stormchaser's Talent",
          "id": "p42"
        },
        {
          "tapped": false,
          "counters": {
            "+1/+1": 1
          },
          "name": "Nurturing Pixie",
          "id": "p53",
          "power": "2",
          "toughness": "2"
        },
        {
          "tapped": false,
          "name": "Gloomlake Verge",
          "id": "p46"
        }
      ],
      "commanders": [
        "Emblem Kaito",
        "Emblem Kaito",
        "Emblem Kaito",
        "Emblem Kaito"
      ],
      "name": "Haiku Analyst",
      "exile": [
        {
          "name": "Nowhere to Run",
          "id": "p14"
        }
      ],
      "library_size": 36,
      "life": 8,
      "hand": [
        {
          "mana_cost": "{3}{U}{U}",
          "name": "Quantum Riddler",
          "id": "p52",
          "power": "4",
          "toughness": "6",
          "playable": true
        },
        {
          "name": "Island",
          "is_land": true,
          "id": "p61",
          "playable": true
        }
      ]
    },
    {
      "hand_size": 6,
      "graveyard": [
        {
          "name": "Requiting Hex",
          "id": "p12"
        },
        {
          "name": "Deep-Cavern Bat",
          "id": "p16"
        },
        {
          "name": "Deep-Cavern Bat",
          "id": "p27"
        },
        {
          "name": "Requiting Hex",
          "id": "p28"
        },
        {
          "name": "Tishana's Tidebinder",
          "id": "p24"
        },
        {
          "name": "Floodpits Drowner",
          "id": "p34"
        },
        {
          "name": "Preacher of the Schism",
          "id": "p20"
        },
        {
          "name": "Island",
          "id": "p43"
        },
        {
          "name": "Swamp",
          "id": "p47"
        },
        {
          "name": "Bitter Triumph",
          "id": "p48"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": false,
          "name": "Swamp",
          "id": "p11"
        },
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p15"
        },
        {
          "tapped": false,
          "name": "Gloomlake Verge",
          "id": "p19"
        },
        {
          "tapped": false,
          "name": "Island",
          "id": "p55"
        },
        {
          "tapped": false,
          "name": "Enduring Curiosity",
          "id": "p56",
          "power": "4",
          "toughness": "3"
        }
      ],
      "name": "GPT5m Rivals",
      "library_size": 37,
      "life": 4
    }
  ],
  "available": true,
  "step": "Precombat Main",
  "turn": 13
}
thinkingHaiku Analyst
Perfect. Opponent is at 4 hp with only an Enduring Curiosity (4/3) on board. I have lethal attackers ready. Let me cast Quantum Riddler (4/6 flyer) to finish this game decisively.
llm
choose_action(id=p52)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_1"
}
thinkingHaiku Analyst
I'll cast it normally (option 0) without the Warp cost.
mcp1. Cast Quantum Riddler
raw
choose_action(index=0)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_0"
}
thinkingHaiku Analyst
Let me pay for Quantum Riddler's mana cost {3}{U}{U}. I'll use my blue sources.
mcp1. {T}: Add {U}.
raw
choose_action(index=0)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_0"
}
Haiku AnalystmcpPass
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku Analystllm
pass_priority()
{
  "actions_passed": 0,
  "land_drops_used": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,8hp), GPT5m Rivals(4hp)",
  "context": "T13 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "untapped_lands": 1,
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
Haiku Analystllm
choose_action(answer=false)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku Analystllm
pass_priority()
{
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,8hp), GPT5m Rivals(4hp)",
  "stop_reason": "pending_action_from_choose_action",
  "response_type": "select",
  "untapped_lands": 1,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 0,
  "land_drops_used": 0,
  "context": "T13 Precombat Main/Precombat Main (Haiku Analyst) YOUR_MAIN",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Stormchaser's Talent",
      "index": 0,
      "action": "cast",
      "id": "p64"
    },
    {
      "name": "Island",
      "index": 1,
      "action": "land",
      "id": "p61"
    }
  ]
}
thinkingHaiku Analyst
I'll pass here and move to combat since I have Quantum Riddler cast and plenty of board presence already.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "passed_priority"
}
Haiku Analystllm
pass_priority()
{
  "combat_phase": "declare_attackers",
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,8hp), GPT5m Rivals(4hp)",
  "stop_reason": "pending_action_from_choose_action",
  "response_type": "select",
  "untapped_lands": 1,
  "message": "Select attackers",
  "action_pending": true,
  "actions_passed": 0,
  "context": "T13 Combat/Declare Attackers (Haiku Analyst)",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "respond_with": "attackers=[\"p1\",...] or answer=true (confirm) or answer=false (skip)",
  "choices": [
    {
      "name": "Sunpearl Kirin",
      "index": 0,
      "choice_type": "attacker",
      "id": "p23",
      "power": "2",
      "toughness": "1"
    },
    {
      "name": "Nurturing Pixie",
      "index": 1,
      "choice_type": "attacker",
      "id": "p53",
      "power": "2",
      "toughness": "2"
    },
    {
      "name": "All attack",
      "index": 2,
      "choice_type": "special",
      "id": "all"
    }
  ]
}
thinkingHaiku Analyst
Perfect. I have Quantum Riddler (4/6 flyer), Sunpearl Kirin (2/1), and Nurturing Pixie (2/2 with +1/+1 counter) to attack. That's 4 + 2 + 3 = 9 damage. Opponent is at 4 hp. I need to be careful about the Enduring Curiosity blocking. Let me attack with all my creatures.
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 handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "batch_attack"
}
Haiku Analystllm
pass_priority()
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(you,8hp), GPT5m Rivals(4hp)",
  "context": "T13 Combat/Declare Attackers (Haiku Analyst)",
  "stop_reason": "pending_action_from_choose_action",
  "warning": "A previous choose_action returned next_action_pending:true. Call get_action_choices or choose_action instead of pass_priority to avoid cancelling the pending action.",
  "response_type": "boolean",
  "untapped_lands": 1,
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Play instants and activated abilities",
  "action_pending": true
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(8hp), GPT5m Rivals(you,4hp)",
  "context": "T13 Combat/Declare Attackers (Haiku Analyst)",
  "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": [
    {
      "mana_cost": "{2}{U}{U}",
      "name": "Enduring Curiosity",
      "index": 0,
      "action": "cast",
      "id": "p39",
      "power": "4",
      "toughness": "3"
    },
    {
      "mana_cost": "{2}{U}{U}",
      "name": "Enduring Curiosity",
      "index": 1,
      "action": "cast",
      "id": "p52",
      "power": "4",
      "toughness": "3"
    }
  ],
  "action_pending": true
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[], id=p39, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_CHOOSE_ABILITY. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p39, ignored index=0"
}
Haiku Analystllm
choose_action(answer=false)
{
  "success": true,
  "action_taken": "passed_priority"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=1, mana_plan=["p32","p50","p36"], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "selected_ability_1"
}
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=true, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=["p36","p32","p50"], attackers=[], blockers=[], id=, text=)
{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to handle the pending GAME_SELECT. Do NOT call pass_priority — it would cancel the pending action.",
  "success": true,
  "action_taken": "confirmed"
}
GPT5m Rivalsllm
pass_priority(until=declare_attackers)
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(8hp), GPT5m Rivals(you,4hp)",
  "context": "T13 Combat/Declare Attackers (Haiku Analyst)",
  "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"
}
GPT5m Rivalsllm
pass_priority(until=declare_attackers)
{
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(8hp), GPT5m Rivals(you,4hp)",
  "context": "T13 Combat/Declare Attackers (Haiku Analyst)",
  "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"
}
GPT5m Rivalsllm
pass_priority(until=my_turn)
{
  "combat_phase": "blockers",
  "actions_passed": 1,
  "action_type": "GAME_SELECT",
  "players": "Haiku Analyst(8hp), GPT5m Rivals(you,4hp)",
  "context": "T13 Combat/Declare Blockers (Haiku Analyst)",
  "stop_reason": "combat",
  "response_type": "select",
  "respond_with": "blockers=[{\"id\":\"pN\",\"blocks\":\"pM\"},...] or answer=true (confirm) or answer=false (skip)",
  "message": "Select blockers",
  "choices": [
    {
      "name": "Enduring Curiosity",
      "index": 0,
      "choice_type": "blocker",
      "id": "p11",
      "power": "4",
      "toughness": "3"
    },
    {
      "name": "Enduring Curiosity",
      "index": 1,
      "choice_type": "blocker",
      "id": "p39",
      "power": "4",
      "toughness": "3"
    }
  ],
  "action_pending": true,
  "incoming_attackers": [
    {
      "name": "Sunpearl Kirin",
      "id": "p37",
      "power": "2",
      "toughness": "1"
    },
    {
      "name": "Nurturing Pixie",
      "id": "p53",
      "power": "2",
      "toughness": "2"
    }
  ]
}
Haiku Analystllm
pass_priority()
{
  "actions_passed": 3,
  "stop_reason": "game_over",
  "game_over": true,
  "action_pending": false
}
llmHaiku Analyst switched to auto-pilot: game_over
GPT5m RivalsmcpAttack with
raw
choose_action(amount=0, answer=false, amounts=[], auto_tap=false, pile=0, index=0, mana_plan=[], attackers=[], blockers=[":{"], id=, text=)
{
  "retryable": false,
  "success": false,
  "error_code": "invalid_blockers",
  "game_over": true,
  "error": "Invalid blockers: blockers entry 0 has empty id in: :{. Expected: [\"blocker:attacker\",...]",
  "player_dead": true
}
llmGPT5m Rivals switched to auto-pilot: game_over
llmGPT5m Rivals Spell cancelled — mana plan was incorrect or incomplete.
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