{
  "actions_passed": 0,
  "action_type": "GAME_TARGET",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "context": "T1 ()",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "can_cancel": false,
  "respond_with": "id=\"pN\" or index=N",
  "message": "Select a starting player",
  "choices": [
    {
      "name": "Grok4 Stoic",
      "target_type": "player",
      "index": 0,
      "id": "p1"
    },
    {
      "is_you": true,
      "name": "GPT5n Valley",
      "target_type": "player",
      "index": 1,
      "id": "p2"
    }
  ],
  "required": true,
  "action_pending": true
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_target_1"
}

{
  "hand_size": 7,
  "actions_passed": 0,
  "action_type": "GAME_ASK",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "land_count": 2,
  "context": "T1 ()",
  "stop_reason": "non_priority_action",
  "response_type": "boolean",
  "respond_with": "answer=true or answer=false",
  "message": "Mulligan down to 6 cards?",
  "your_hand": [
    {
      "name": "Spirebluff Canal",
      "is_land": true
    },
    {
      "name": "Steam Vents",
      "is_land": true
    },
    {
      "mana_cost": "{1}{R}",
      "name": "Combustion Technique"
    },
    {
      "mana_cost": "{1}{R}",
      "name": "Iroh's Demonstration"
    },
    {
      "mana_cost": "{R}",
      "name": "Firebending Lesson"
    },
    {
      "mana_cost": "{U}",
      "name": "Spell Snare"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead"
    }
  ],
  "action_pending": true
}

{
  "success": true,
  "action_taken": "no"
}

{
  "cards": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "rules": [
        "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
      ],
      "type": "Instant"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "rules": [
        "Flash",
        "Flying",
        "Vigilance",
        "When {this} enters, put X +1/+1 counters on him. Then draw half X cards, rounded down.",
        "Whenever an opponent searches their library, put a +1/+1 counter on {this} and draw a card."
      ],
      "power": "1",
      "type": "Legendary Creature — Bird Spirit",
      "toughness": "1"
    },
    {
      "name": "Demolition Field",
      "rules": [
        "{T}: Add {C}.",
        "{2}, {T}, Sacrifice {this}: Destroy target nonbasic land an opponent controls. That land's controller may search their library for a basic land card, put it onto the battlefield, then shuffle. You may search your library for a basic land card, put it onto the battlefield, then shuffle."
      ],
      "type": "Land"
    }
  ],
  "success": true
}

{
  "actions_passed": 2,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "context": "T1 Postcombat Main/Postcombat Main (GPT5n Valley) 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": "Spirebluff Canal",
      "index": 0,
      "action": "land",
      "id": "p3"
    },
    {
      "name": "Steam Vents",
      "index": 1,
      "action": "land",
      "id": "p4"
    }
  ],
  "action_pending": true
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_1",
  "warning": "Both id and index provided; used id=p4, ignored index=1"
}

{
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "context": "T1 Precombat Main/Precombat Main (Grok4 Stoic) 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": "Swamp",
      "index": 0,
      "action": "land",
      "id": "p2"
    },
    {
      "name": "Watery Grave",
      "index": 1,
      "action": "land",
      "id": "p4"
    },
    {
      "name": "Demolition Field",
      "index": 2,
      "action": "land",
      "id": "p7"
    }
  ],
  "action_pending": true
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_ASK",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_1"
}

{
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(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 (GPT5n Valley) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Spirebluff Canal",
      "index": 0,
      "action": "land",
      "id": "p3"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 1,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Mountain",
      "index": 2,
      "action": "land",
      "id": "p6"
    }
  ]
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_1",
  "warning": "Both id and index provided; used id=p5, ignored index=1"
}

{
  "phase": "Precombat Main",
  "priority_player": "GPT5n Valley",
  "cursor": 1,
  "stack": [],
  "active_player": "GPT5n Valley",
  "players": [
    {
      "hand_size": 7,
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Steam Vents",
          "id": "p4"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 52,
      "life": 20,
      "hand": [
        {
          "name": "Spirebluff Canal",
          "is_land": true,
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{1}{R}",
          "name": "Combustion Technique",
          "id": "p7"
        },
        {
          "mana_cost": "{1}{R}",
          "name": "Iroh's Demonstration",
          "id": "p8"
        },
        {
          "mana_cost": "{R}",
          "name": "Firebending Lesson",
          "id": "p9"
        },
        {
          "mana_cost": "{U}",
          "name": "Spell Snare",
          "id": "p10"
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "name": "Mountain",
          "is_land": true,
          "id": "p6",
          "playable": true
        }
      ]
    },
    {
      "hand_size": 6,
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Watery Grave",
          "id": "p11"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 52,
      "life": 20
    }
  ],
  "available": true,
  "step": "Precombat Main",
  "turn": 2
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p3, ignored index=0"
}

{
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "stop_reason": "reached_step",
  "response_type": "select",
  "untapped_lands": 2,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 0,
  "land_drops_used": 1,
  "context": "T2 Precombat Main/Precombat Main (GPT5n Valley) YOUR_MAIN",
  "recent_chat": [
    "[System] Spell cancelled — not enough mana to complete payment."
  ],
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{1}{R}",
      "name": "Iroh's Demonstration",
      "index": 0,
      "action": "cast",
      "id": "p8"
    }
  ],
  "current_step": "Precombat Main"
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p8, ignored index=0"
}

{
  "phase": "Precombat Main",
  "priority_player": "GPT5n Valley",
  "cursor": 2,
  "stack": [
    {
      "name": "Iroh's Demonstration",
      "rules": [
        "Choose one —: &bull {this} deals 1 damage to each creature your opponents control.: &bull {this} deals 4 damage to target creature.: ",
        "Chosen mode: {this} deals 1 damage to each creature your opponents control."
      ],
      "id": "p12"
    }
  ],
  "active_player": "GPT5n Valley",
  "players": [
    {
      "hand_size": 5,
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": true,
          "name": "Steam Vents",
          "id": "p4"
        },
        {
          "tapped": true,
          "name": "Spirebluff Canal",
          "id": "p3"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 52,
      "life": 20,
      "hand": [
        {
          "mana_cost": "{1}{R}",
          "name": "Combustion Technique",
          "id": "p7"
        },
        {
          "mana_cost": "{R}",
          "name": "Firebending Lesson",
          "id": "p9"
        },
        {
          "mana_cost": "{U}",
          "name": "Spell Snare",
          "id": "p10"
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5"
        },
        {
          "name": "Mountain",
          "is_land": true,
          "id": "p6"
        }
      ]
    },
    {
      "hand_size": 6,
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Watery Grave",
          "id": "p11"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 52,
      "life": 20
    }
  ],
  "available": true,
  "step": "Precombat Main",
  "turn": 2
}

{
  "phase": "Precombat Main",
  "priority_player": "GPT5n Valley",
  "cursor": 2,
  "stack": [
    {
      "name": "Iroh's Demonstration",
      "rules": [
        "Choose one —: &bull {this} deals 1 damage to each creature your opponents control.: &bull {this} deals 4 damage to target creature.: ",
        "Chosen mode: {this} deals 1 damage to each creature your opponents control."
      ],
      "id": "p12"
    }
  ],
  "active_player": "GPT5n Valley",
  "players": [
    {
      "hand_size": 5,
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": true,
          "name": "Steam Vents",
          "id": "p4"
        },
        {
          "tapped": true,
          "name": "Spirebluff Canal",
          "id": "p3"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 52,
      "life": 20,
      "hand": [
        {
          "mana_cost": "{1}{R}",
          "name": "Combustion Technique",
          "id": "p7"
        },
        {
          "mana_cost": "{R}",
          "name": "Firebending Lesson",
          "id": "p9"
        },
        {
          "mana_cost": "{U}",
          "name": "Spell Snare",
          "id": "p10"
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5"
        },
        {
          "name": "Mountain",
          "is_land": true,
          "id": "p6"
        }
      ]
    },
    {
      "hand_size": 6,
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Watery Grave",
          "id": "p11"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 52,
      "life": 20
    }
  ],
  "available": true,
  "step": "Precombat Main",
  "turn": 2
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}

{
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,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 (Grok4 Stoic) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Swamp",
      "index": 0,
      "action": "land",
      "id": "p2"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 1,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 2,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Demolition Field",
      "index": 3,
      "action": "land",
      "id": "p7"
    }
  ]
}

{
  "phase": "Precombat Main",
  "priority_player": "Grok4 Stoic",
  "cursor": 1,
  "stack": [],
  "active_player": "Grok4 Stoic",
  "players": [
    {
      "hand_size": 5,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": true,
          "name": "Spirebluff Canal",
          "id": "p9"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 52,
      "life": 20
    },
    {
      "hand_size": 7,
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 51,
      "life": 20,
      "hand": [
        {
          "name": "Demolition Field",
          "is_land": true,
          "id": "p7",
          "playable": true
        },
        {
          "name": "Swamp",
          "is_land": true,
          "id": "p2",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1"
        },
        {
          "mana_cost": "{B}",
          "name": "Requiting Hex",
          "id": "p11"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Negate",
          "id": "p12"
        }
      ]
    }
  ],
  "available": true,
  "step": "Precombat Main",
  "turn": 2
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_3"
}

{
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 6,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T3 Precombat Main/Precombat Main (GPT5n Valley) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Riverpyre Verge",
      "index": 1,
      "action": "land",
      "id": "p13"
    },
    {
      "name": "Mountain",
      "index": 2,
      "action": "land",
      "id": "p6"
    }
  ]
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}

{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "context": "T3 Combat/Declare Attackers (GPT5n Valley)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play instants and activated abilities",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 1,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Demolition Field",
      "index": 2,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ],
  "action_pending": true
}

{
  "phase": "Combat",
  "priority_player": "Grok4 Stoic",
  "cursor": 3,
  "stack": [],
  "active_player": "GPT5n Valley",
  "players": [
    {
      "hand_size": 6,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        }
      ],
      "is_active": true,
      "is_you": false,
      "battlefield": [
        {
          "tapped": false,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": false,
          "name": "Spirebluff Canal",
          "id": "p9"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 51,
      "life": 20
    },
    {
      "hand_size": 6,
      "is_active": false,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Demolition Field",
          "id": "p7"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 51,
      "life": 20,
      "hand": [
        {
          "name": "Swamp",
          "is_land": true,
          "id": "p2"
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1"
        },
        {
          "mana_cost": "{B}",
          "name": "Requiting Hex",
          "id": "p11"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Negate",
          "id": "p12"
        }
      ]
    }
  ],
  "available": true,
  "step": "Declare Attackers",
  "turn": 3
}

{
  "success": true,
  "mana_cost": "{U}",
  "name": "Three Steps Ahead",
  "rules": [
    "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
  ],
  "type": "Instant"
}

{
  "success": true,
  "name": "Demolition Field",
  "rules": [
    "{T}: Add {C}.",
    "{2}, {T}, Sacrifice {this}: Destroy target nonbasic land an opponent controls. That land's controller may search their library for a basic land card, put it onto the battlefield, then shuffle. You may search your library for a basic land card, put it onto the battlefield, then shuffle."
  ],
  "type": "Land"
}

{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "context": "T3 Combat/Declare Attackers (Grok4 Stoic)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play instants and activated abilities",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p5"
    }
  ],
  "action_pending": true
}

{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "context": "T3 Postcombat Main/Postcombat Main (Grok4 Stoic)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play instants and activated abilities",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p5"
    }
  ],
  "action_pending": true
}

{
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T4 Precombat Main/Precombat Main (GPT5n Valley) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Riverpyre Verge",
      "index": 1,
      "action": "land",
      "id": "p13"
    },
    {
      "mana_cost": "{1}{U/R}",
      "name": "Abandon Attachments",
      "index": 2,
      "action": "cast",
      "id": "p16"
    },
    {
      "name": "Mountain",
      "index": 3,
      "action": "land",
      "id": "p6"
    }
  ]
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p5, ignored index=0"
}

{
  "stack": [
    {
      "name": "Three Steps Ahead"
    }
  ],
  "action_type": "GAME_CHOOSE_ABILITY",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "untapped_lands": 2,
  "message": "Choose mode (selected 0 of 2147483647, min 1): Three Steps Ahead",
  "action_pending": true,
  "actions_passed": 0,
  "land_drops_used": 0,
  "context": "T4 Precombat Main/Precombat Main (GPT5n Valley) YOUR_MAIN",
  "respond_with": "index=N",
  "choices": [
    {
      "index": 0,
      "description": "3. Draw two cards, then discard a card."
    },
    {
      "index": 1,
      "description": "Cancel"
    }
  ]
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}

{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "context": "T4 Combat/Declare Attackers (GPT5n Valley)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play instants and activated abilities",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 1,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 2,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Demolition Field",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ],
  "action_pending": true
}

{
  "phase": "Combat",
  "priority_player": "Grok4 Stoic",
  "cursor": 4,
  "stack": [],
  "active_player": "GPT5n Valley",
  "players": [
    {
      "hand_size": 7,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        }
      ],
      "is_active": true,
      "is_you": false,
      "battlefield": [
        {
          "tapped": false,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": false,
          "name": "Spirebluff Canal",
          "id": "p9"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 50,
      "life": 20
    },
    {
      "hand_size": 7,
      "is_active": false,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Demolition Field",
          "id": "p7"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 50,
      "life": 20,
      "hand": [
        {
          "name": "Swamp",
          "is_land": true,
          "id": "p2"
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1"
        },
        {
          "mana_cost": "{B}",
          "name": "Requiting Hex",
          "id": "p11"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Negate",
          "id": "p12"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Consult the Star Charts",
          "id": "p13",
          "playable": true
        }
      ]
    }
  ],
  "available": true,
  "step": "Declare Attackers",
  "turn": 4
}

{
  "success": true,
  "mana_cost": "{U}",
  "name": "Three Steps Ahead",
  "rules": [
    "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
  ],
  "type": "Instant"
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_ability_0"
}

{
  "stack": [
    {
      "name": "Three Steps Ahead"
    }
  ],
  "action_type": "GAME_CHOOSE_ABILITY",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "untapped_lands": 2,
  "message": "Choose mode (selected 1 of 2147483647, min 1): Three Steps Ahead",
  "action_pending": true,
  "actions_passed": 0,
  "land_drops_used": 0,
  "context": "T4 Postcombat Main/Postcombat Main (GPT5n Valley) YOUR_MAIN",
  "respond_with": "index=N",
  "choices": [
    {
      "index": 0,
      "description": "Done"
    },
    {
      "index": 1,
      "description": "Cancel"
    }
  ]
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}

{
  "actions_passed": 0,
  "stack": [
    {
      "name": "Three Steps Ahead"
    }
  ],
  "action_type": "GAME_CHOOSE_ABILITY",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "context": "T4 Precombat Main/Precombat Main (Grok4 Stoic)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "untapped_lands": 2,
  "respond_with": "index=N",
  "message": "Choose mode (selected 0 of 2147483647, min 1): Three Steps Ahead",
  "choices": [
    {
      "index": 0,
      "description": "3. Draw two cards, then discard a card."
    },
    {
      "index": 1,
      "description": "Cancel"
    }
  ],
  "action_pending": true
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}

{
  "actions_passed": 0,
  "stack": [
    {
      "name": "Three Steps Ahead"
    }
  ],
  "action_type": "GAME_CHOOSE_ABILITY",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "context": "T4 Combat/Declare Attackers (Grok4 Stoic)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "untapped_lands": 2,
  "respond_with": "index=N",
  "message": "Choose mode (selected 0 of 2147483647, min 1): Three Steps Ahead",
  "choices": [
    {
      "index": 0,
      "description": "3. Draw two cards, then discard a card."
    },
    {
      "index": 1,
      "description": "Cancel"
    }
  ],
  "action_pending": true
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}

{
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T4 Postcombat Main/Postcombat Main (Grok4 Stoic) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Swamp",
      "index": 0,
      "action": "land",
      "id": "p2"
    },
    {
      "name": "Undercity Sewers",
      "index": 1,
      "action": "land",
      "id": "p14"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 2,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 3,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 4,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Demolition Field",
      "index": 5,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ]
}

{
  "phase": "Postcombat Main",
  "priority_player": "Grok4 Stoic",
  "cursor": 5,
  "stack": [],
  "active_player": "Grok4 Stoic",
  "players": [
    {
      "hand_size": 7,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": false,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": false,
          "name": "Spirebluff Canal",
          "id": "p9"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 50,
      "life": 20
    },
    {
      "hand_size": 8,
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Demolition Field",
          "id": "p7"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 49,
      "life": 20,
      "hand": [
        {
          "name": "Swamp",
          "is_land": true,
          "id": "p2",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1"
        },
        {
          "mana_cost": "{B}",
          "name": "Requiting Hex",
          "id": "p11"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Negate",
          "id": "p12"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Consult the Star Charts",
          "id": "p13",
          "playable": true
        },
        {
          "name": "Undercity Sewers",
          "is_land": true,
          "id": "p14",
          "playable": true
        }
      ]
    }
  ],
  "available": true,
  "step": "Postcombat Main",
  "turn": 4
}

{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "context": "T4 Postcombat Main/Postcombat Main (Grok4 Stoic)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play instants and activated abilities",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p5"
    },
    {
      "mana_cost": "{1}{U/R}",
      "name": "Abandon Attachments",
      "index": 1,
      "action": "cast",
      "id": "p16"
    }
  ],
  "action_pending": true
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p5, ignored index=0"
}

{
  "cards": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "rules": [
        "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
      ],
      "type": "Instant"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "rules": [
        "Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)",
        "Look at the top X cards of your library, where X is the number of lands you control. Put one of those cards into your hand. If this spell was kicked, put two of those cards into your hand instead. Put the rest on the bottom of your library in a random order."
      ],
      "type": "Instant"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "rules": [
        "Flash",
        "Flying",
        "Vigilance",
        "When {this} enters, put X +1/+1 counters on him. Then draw half X cards, rounded down.",
        "Whenever an opponent searches their library, put a +1/+1 counter on {this} and draw a card."
      ],
      "power": "1",
      "type": "Legendary Creature — Bird Spirit",
      "toughness": "1"
    },
    {
      "mana_cost": "{B}",
      "name": "Requiting Hex",
      "rules": [
        "As an additional cost to cast this spell, you may blight 1. (You may put a -1/-1 counteron a creature you control.)",
        "Destroy target creature with mana value 2 or less. If this spell's additional cost was paid, you gain 2 life."
      ],
      "type": "Instant"
    },
    {
      "name": "Undercity Sewers",
      "rules": [
        "{T}: Add {U}.",
        "{T}: Add {B}.",
        "{this} enters tapped.",
        "When {this} enters, surveil 1."
      ],
      "type": "Land — Island Swamp"
    },
    {
      "name": "Demolition Field",
      "rules": [
        "{T}: Add {C}.",
        "{2}, {T}, Sacrifice {this}: Destroy target nonbasic land an opponent controls. That land's controller may search their library for a basic land card, put it onto the battlefield, then shuffle. You may search your library for a basic land card, put it onto the battlefield, then shuffle."
      ],
      "type": "Land"
    }
  ],
  "success": true
}

{
  "action_type": "GAME_TARGET",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "can_cancel": false,
  "untapped_lands": 2,
  "message": "Select a card to discard",
  "required": true,
  "action_pending": true,
  "actions_passed": 0,
  "context": "T4 End/Cleanup (Grok4 Stoic)",
  "respond_with": "id=\"pN\" or index=N",
  "choices": [
    {
      "name": "Swamp",
      "target_type": "card",
      "index": 0,
      "id": "p2"
    },
    {
      "name": "Undercity Sewers",
      "target_type": "card",
      "index": 1,
      "id": "p14"
    },
    {
      "name": "Three Steps Ahead",
      "target_type": "card",
      "index": 2,
      "id": "p3"
    },
    {
      "name": "Requiting Hex",
      "target_type": "card",
      "index": 3,
      "id": "p11"
    },
    {
      "name": "Negate",
      "target_type": "card",
      "index": 4,
      "id": "p12"
    },
    {
      "name": "Consult the Star Charts",
      "target_type": "card",
      "index": 5,
      "id": "p13"
    },
    {
      "name": "Three Steps Ahead",
      "target_type": "card",
      "index": 6,
      "id": "p5"
    },
    {
      "name": "Wan Shi Tong, Librarian",
      "target_type": "card",
      "index": 7,
      "id": "p6"
    }
  ]
}

{
  "cards": [
    {
      "name": "Swamp",
      "rules": [
        "{T}: Add {B}."
      ],
      "type": "Basic Land  - Swamp",
      "object_id": "p2"
    },
    {
      "name": "Undercity Sewers",
      "rules": [
        "{T}: Add {U}.",
        "{T}: Add {B}.",
        "{this} enters tapped.",
        "When {this} enters, surveil 1."
      ],
      "type": "Land  - Island Swamp",
      "object_id": "p14"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "rules": [
        "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
      ],
      "type": "Instant",
      "object_id": "p3"
    },
    {
      "mana_cost": "{B}",
      "name": "Requiting Hex",
      "rules": [
        "As an additional cost to cast this spell, you may blight 1. (You may put a -1/-1 counteron a creature you control.)",
        "Destroy target creature with mana value 2 or less. If this spell's additional cost was paid, you gain 2 life."
      ],
      "type": "Instant",
      "object_id": "p11"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Negate",
      "rules": [
        "Counter target noncreature spell."
      ],
      "type": "Instant",
      "object_id": "p12"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "rules": [
        "Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)",
        "Look at the top X cards of your library, where X is the number of lands you control. Put one of those cards into your hand. If this spell was kicked, put two of those cards into your hand instead. Put the rest on the bottom of your library in a random order."
      ],
      "type": "Instant",
      "object_id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "rules": [
        "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
      ],
      "type": "Instant",
      "object_id": "p5"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "rules": [
        "Flash",
        "Flying",
        "Vigilance",
        "When {this} enters, put X +1/+1 counters on him. Then draw half X cards, rounded down.",
        "Whenever an opponent searches their library, put a +1/+1 counter on {this} and draw a card."
      ],
      "power": "1",
      "type": "Legendary Creature  - Bird Spirit",
      "toughness": "1",
      "object_id": "p6"
    }
  ],
  "success": true
}

{
  "phase": "End",
  "priority_player": "Grok4 Stoic",
  "cursor": 6,
  "stack": [],
  "active_player": "Grok4 Stoic",
  "players": [
    {
      "hand_size": 7,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": false,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": false,
          "name": "Spirebluff Canal",
          "id": "p9"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 50,
      "life": 20
    },
    {
      "hand_size": 8,
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Demolition Field",
          "id": "p7"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 49,
      "life": 20,
      "hand": [
        {
          "name": "Swamp",
          "is_land": true,
          "id": "p2"
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1"
        },
        {
          "mana_cost": "{B}",
          "name": "Requiting Hex",
          "id": "p11"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Negate",
          "id": "p12"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Consult the Star Charts",
          "id": "p13",
          "playable": true
        },
        {
          "name": "Undercity Sewers",
          "is_land": true,
          "id": "p14"
        }
      ]
    }
  ],
  "available": true,
  "step": "Cleanup",
  "turn": 4
}

{
  "retryable": true,
  "success": false,
  "warning": "Both id and index provided; used id=p5, ignored index=0",
  "error_code": "invalid_choice",
  "error": "Object p5 not found in current choices",
  "choices": [
    {
      "index": 0,
      "description": "3. Draw two cards, then discard a card."
    },
    {
      "index": 1,
      "description": "Cancel"
    }
  ]
}

{
  "stack": [
    {
      "name": "Three Steps Ahead"
    }
  ],
  "action_type": "GAME_CHOOSE_ABILITY",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "untapped_lands": 2,
  "message": "Choose mode (selected 0 of 2147483647, min 1): Three Steps Ahead",
  "action_pending": true,
  "actions_passed": 0,
  "land_drops_used": 0,
  "context": "T5 Precombat Main/Precombat Main (GPT5n Valley) YOUR_MAIN",
  "respond_with": "index=N",
  "choices": [
    {
      "index": 0,
      "description": "3. Draw two cards, then discard a card."
    },
    {
      "index": 1,
      "description": "Cancel"
    }
  ]
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}

{
  "actions_passed": 0,
  "stack": [
    {
      "name": "Three Steps Ahead"
    }
  ],
  "action_type": "GAME_CHOOSE_ABILITY",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "context": "T5 Combat/Declare Attackers (GPT5n Valley)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "untapped_lands": 2,
  "respond_with": "index=N",
  "message": "Choose mode (selected 0 of 2147483647, min 1): Three Steps Ahead",
  "choices": [
    {
      "index": 0,
      "description": "3. Draw two cards, then discard a card."
    },
    {
      "index": 1,
      "description": "Cancel"
    }
  ],
  "action_pending": true
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}

{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "context": "T5 Combat/Declare Attackers (GPT5n Valley)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play instants and activated abilities",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 1,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 2,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Demolition Field",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ],
  "action_pending": true
}

{
  "phase": "Combat",
  "priority_player": "Grok4 Stoic",
  "cursor": 7,
  "stack": [],
  "active_player": "GPT5n Valley",
  "players": [
    {
      "hand_size": 8,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        }
      ],
      "is_active": true,
      "is_you": false,
      "battlefield": [
        {
          "tapped": false,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": false,
          "name": "Spirebluff Canal",
          "id": "p9"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 49,
      "life": 20
    },
    {
      "hand_size": 7,
      "graveyard": [
        {
          "name": "Swamp",
          "id": "p2"
        }
      ],
      "is_active": false,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Demolition Field",
          "id": "p7"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 49,
      "life": 20,
      "hand": [
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1"
        },
        {
          "mana_cost": "{B}",
          "name": "Requiting Hex",
          "id": "p11"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Negate",
          "id": "p12"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Consult the Star Charts",
          "id": "p13",
          "playable": true
        },
        {
          "name": "Undercity Sewers",
          "is_land": true,
          "id": "p14"
        }
      ]
    }
  ],
  "available": true,
  "step": "Declare Attackers",
  "turn": 5
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p5, ignored index=0"
}

{
  "success": true,
  "action_taken": "passed_priority"
}

{
  "stack": [
    {
      "name": "Three Steps Ahead"
    }
  ],
  "action_type": "GAME_CHOOSE_ABILITY",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "untapped_lands": 2,
  "message": "Choose mode (selected 0 of 2147483647, min 1): Three Steps Ahead",
  "action_pending": true,
  "actions_passed": 0,
  "land_drops_used": 0,
  "context": "T5 Postcombat Main/Postcombat Main (GPT5n Valley) YOUR_MAIN",
  "respond_with": "index=N",
  "choices": [
    {
      "index": 0,
      "description": "3. Draw two cards, then discard a card."
    },
    {
      "index": 1,
      "description": "Cancel"
    }
  ]
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}

{
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T5 Precombat Main/Precombat Main (Grok4 Stoic) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Undercity Sewers",
      "index": 0,
      "action": "land",
      "id": "p14"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 1,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 2,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 3,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Demolition Field",
      "index": 4,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ]
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}

{
  "stack": [
    {
      "name": "Ability"
    }
  ],
  "action_type": "GAME_TARGET",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "can_cancel": true,
  "untapped_lands": 2,
  "message": "Select up to one card to PUT into your GRAVEYARD (Surveil)",
  "required": false,
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 1,
  "context": "T5 Precombat Main/Precombat Main (Grok4 Stoic) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N, or answer=false to cancel",
  "choices": [
    {
      "name": "Feed the Cycle",
      "target_type": "card",
      "index": 0,
      "id": "p15"
    }
  ]
}

{
  "success": false,
  "error": "Object not found in current game state: p15"
}

{
  "success": true,
  "mana_cost": "{1}{B}",
  "name": "Feed the Cycle",
  "rules": [
    "As an additional cost to cast this spell, forage or pay {B}.: ",
    "Destroy target creature or planeswalker."
  ],
  "type": "Instant"
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "cancelled"
}

{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "context": "T5 Precombat Main/Precombat Main (Grok4 Stoic)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play instants and activated abilities",
  "choices": [
    {
      "mana_cost": "{1}{U/R}",
      "name": "Abandon Attachments",
      "index": 0,
      "action": "cast",
      "id": "p16"
    }
  ],
  "action_pending": true
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p16, ignored index=0"
}

{
  "cards": [
    {
      "name": "Watery Grave",
      "rules": [
        "As {this} enters, you may pay 2 life. If you don't, it enters tapped.",
        "{T}: Add {U}.",
        "{T}: Add {B}."
      ],
      "type": "Land  - Island Swamp",
      "object_id": "p4"
    },
    {
      "name": "Demolition Field",
      "rules": [
        "{T}: Add {C}.",
        "{2}, {T}, Sacrifice {this}: Destroy target nonbasic land an opponent controls. That land's controller may search their library for a basic land card, put it onto the battlefield, then shuffle. You may search your library for a basic land card, put it onto the battlefield, then shuffle."
      ],
      "type": "Land",
      "object_id": "p7"
    },
    {
      "name": "Undercity Sewers",
      "rules": [
        "{T}: Add {U}.",
        "{T}: Add {B}.",
        "{this} enters tapped.",
        "When {this} enters, surveil 1."
      ],
      "type": "Land  - Island Swamp",
      "object_id": "p14"
    }
  ],
  "success": true
}

{
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 1,
  "has_playable_cards": true,
  "context": "T5 Precombat Main/Precombat Main (Grok4 Stoic) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 1,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 2,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Demolition Field",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ]
}

{
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 3,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T6 Precombat Main/Precombat Main (GPT5n Valley) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{1}{R}",
      "name": "Artist's Talent",
      "index": 0,
      "action": "cast",
      "id": "p21"
    },
    {
      "name": "Riverpyre Verge",
      "index": 1,
      "action": "land",
      "id": "p13"
    },
    {
      "name": "Mountain",
      "index": 2,
      "action": "land",
      "id": "p6"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Accumulate Wisdom",
      "index": 3,
      "action": "cast",
      "id": "p22"
    }
  ]
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0",
  "warning": "Both id and index provided; used id=p21, ignored index=0"
}

{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "context": "T6 Precombat Main/Precombat Main (GPT5n Valley)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play instants and activated abilities",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 1,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 2,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Demolition Field",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ],
  "action_pending": true
}

{
  "phase": "Precombat Main",
  "priority_player": "Grok4 Stoic",
  "cursor": 8,
  "stack": [],
  "active_player": "GPT5n Valley",
  "players": [
    {
      "hand_size": 6,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        },
        {
          "name": "Three Steps Ahead",
          "id": "p18"
        },
        {
          "name": "Firebending Lesson",
          "id": "p19"
        },
        {
          "name": "Abandon Attachments",
          "id": "p20"
        }
      ],
      "is_active": true,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": true,
          "name": "Spirebluff Canal",
          "id": "p9"
        },
        {
          "tapped": false,
          "name": "Artist's Talent",
          "id": "p16"
        },
        {
          "tapped": false,
          "name": "Riverpyre Verge",
          "id": "p17"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 46,
      "life": 20
    },
    {
      "hand_size": 7,
      "graveyard": [
        {
          "name": "Swamp",
          "id": "p2"
        }
      ],
      "is_active": false,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Demolition Field",
          "id": "p7"
        },
        {
          "tapped": true,
          "name": "Undercity Sewers",
          "id": "p14"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 48,
      "life": 20,
      "hand": [
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1"
        },
        {
          "mana_cost": "{B}",
          "name": "Requiting Hex",
          "id": "p11"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Negate",
          "id": "p12"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Consult the Star Charts",
          "id": "p13",
          "playable": true
        },
        {
          "mana_cost": "{3}{B}{B}",
          "name": "Deadly Cover-Up",
          "id": "p21"
        }
      ]
    }
  ],
  "available": true,
  "step": "Precombat Main",
  "turn": 6
}

{
  "success": true,
  "mana_cost": "{U}",
  "name": "Three Steps Ahead",
  "rules": [
    "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
  ],
  "type": "Instant"
}

{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "context": "T6 Combat/Declare Attackers (Grok4 Stoic)",
  "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": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 1,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 2,
      "action": "cast",
      "id": "p5"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "index": 3,
      "action": "cast",
      "id": "p6",
      "power": "1",
      "toughness": "1"
    },
    {
      "name": "Demolition Field",
      "index": 4,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ],
  "action_pending": true
}

{
  "cards": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "rules": [
        "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
      ],
      "type": "Instant"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "rules": [
        "Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)",
        "Look at the top X cards of your library, where X is the number of lands you control. Put one of those cards into your hand. If this spell was kicked, put two of those cards into your hand instead. Put the rest on the bottom of your library in a random order."
      ],
      "type": "Instant"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "rules": [
        "Flash",
        "Flying",
        "Vigilance",
        "When {this} enters, put X +1/+1 counters on him. Then draw half X cards, rounded down.",
        "Whenever an opponent searches their library, put a +1/+1 counter on {this} and draw a card."
      ],
      "power": "1",
      "type": "Legendary Creature — Bird Spirit",
      "toughness": "1"
    },
    {
      "name": "Demolition Field",
      "rules": [
        "{T}: Add {C}.",
        "{2}, {T}, Sacrifice {this}: Destroy target nonbasic land an opponent controls. That land's controller may search their library for a basic land card, put it onto the battlefield, then shuffle. You may search your library for a basic land card, put it onto the battlefield, then shuffle."
      ],
      "type": "Land"
    }
  ],
  "success": true
}

{
  "phase": "Combat",
  "priority_player": "Grok4 Stoic",
  "cursor": 9,
  "stack": [],
  "active_player": "Grok4 Stoic",
  "players": [
    {
      "hand_size": 6,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        },
        {
          "name": "Three Steps Ahead",
          "id": "p18"
        },
        {
          "name": "Firebending Lesson",
          "id": "p19"
        },
        {
          "name": "Abandon Attachments",
          "id": "p20"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": true,
          "name": "Spirebluff Canal",
          "id": "p9"
        },
        {
          "tapped": false,
          "name": "Artist's Talent",
          "id": "p16"
        },
        {
          "tapped": false,
          "name": "Riverpyre Verge",
          "id": "p17"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 46,
      "life": 20
    },
    {
      "hand_size": 8,
      "graveyard": [
        {
          "name": "Swamp",
          "id": "p2"
        }
      ],
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Demolition Field",
          "id": "p7"
        },
        {
          "tapped": false,
          "name": "Undercity Sewers",
          "id": "p14"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 47,
      "life": 20,
      "hand": [
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1",
          "playable": true
        },
        {
          "mana_cost": "{B}",
          "name": "Requiting Hex",
          "id": "p11"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Negate",
          "id": "p12"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Consult the Star Charts",
          "id": "p13",
          "playable": true
        },
        {
          "mana_cost": "{3}{B}{B}",
          "name": "Deadly Cover-Up",
          "id": "p21"
        },
        {
          "mana_cost": "{1}{B}",
          "name": "Feed the Cycle",
          "id": "p15"
        }
      ]
    }
  ],
  "available": true,
  "step": "Declare Attackers",
  "turn": 6
}

{
  "action_type": "GAME_TARGET",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "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": 0,
  "context": "T6 End/Cleanup (Grok4 Stoic)",
  "respond_with": "id=\"pN\" or index=N",
  "choices": [
    {
      "name": "Three Steps Ahead",
      "target_type": "card",
      "index": 0,
      "id": "p3"
    },
    {
      "name": "Requiting Hex",
      "target_type": "card",
      "index": 1,
      "id": "p11"
    },
    {
      "name": "Negate",
      "target_type": "card",
      "index": 2,
      "id": "p12"
    },
    {
      "name": "Consult the Star Charts",
      "target_type": "card",
      "index": 3,
      "id": "p13"
    },
    {
      "name": "Deadly Cover-Up",
      "target_type": "card",
      "index": 4,
      "id": "p21"
    },
    {
      "name": "Three Steps Ahead",
      "target_type": "card",
      "index": 5,
      "id": "p5"
    },
    {
      "name": "Wan Shi Tong, Librarian",
      "target_type": "card",
      "index": 6,
      "id": "p6"
    },
    {
      "name": "Feed the Cycle",
      "target_type": "card",
      "index": 7,
      "id": "p15"
    }
  ]
}

{
  "cards": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "rules": [
        "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
      ],
      "type": "Instant",
      "object_id": "p3"
    },
    {
      "mana_cost": "{B}",
      "name": "Requiting Hex",
      "rules": [
        "As an additional cost to cast this spell, you may blight 1. (You may put a -1/-1 counteron a creature you control.)",
        "Destroy target creature with mana value 2 or less. If this spell's additional cost was paid, you gain 2 life."
      ],
      "type": "Instant",
      "object_id": "p11"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Negate",
      "rules": [
        "Counter target noncreature spell."
      ],
      "type": "Instant",
      "object_id": "p12"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "rules": [
        "Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)",
        "Look at the top X cards of your library, where X is the number of lands you control. Put one of those cards into your hand. If this spell was kicked, put two of those cards into your hand instead. Put the rest on the bottom of your library in a random order."
      ],
      "type": "Instant",
      "object_id": "p13"
    },
    {
      "mana_cost": "{3}{B}{B}",
      "name": "Deadly Cover-Up",
      "rules": [
        "As an additional cost to cast this spell, you may collect evidence 6. (Exile cards with total mana value 6 or greater from your graveyard)",
        "Destroy all creatures. If evidence was collected, exile a card from an opponent's graveyard. Then search its owner's graveyard, hand, and library for any number of cards with that name and exile them. That player shuffles, then draws a card for each card exiled from their hand this way.",
        ": ",
        "ICON_BADEvidence was used (need: 6, can collect: 0)"
      ],
      "type": "Sorcery",
      "object_id": "p21"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "rules": [
        "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
      ],
      "type": "Instant",
      "object_id": "p5"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "rules": [
        "Flash",
        "Flying",
        "Vigilance",
        "When {this} enters, put X +1/+1 counters on him. Then draw half X cards, rounded down.",
        "Whenever an opponent searches their library, put a +1/+1 counter on {this} and draw a card."
      ],
      "power": "1",
      "type": "Legendary Creature  - Bird Spirit",
      "toughness": "1",
      "object_id": "p6"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Feed the Cycle",
      "rules": [
        "As an additional cost to cast this spell, forage or pay {B}.: ",
        "Destroy target creature or planeswalker."
      ],
      "type": "Instant",
      "object_id": "p15"
    }
  ],
  "success": true
}

{
  "phase": "End",
  "priority_player": "Grok4 Stoic",
  "cursor": 10,
  "stack": [],
  "active_player": "Grok4 Stoic",
  "players": [
    {
      "hand_size": 6,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        },
        {
          "name": "Three Steps Ahead",
          "id": "p18"
        },
        {
          "name": "Firebending Lesson",
          "id": "p19"
        },
        {
          "name": "Abandon Attachments",
          "id": "p20"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": true,
          "name": "Spirebluff Canal",
          "id": "p9"
        },
        {
          "tapped": false,
          "name": "Artist's Talent",
          "id": "p16"
        },
        {
          "tapped": false,
          "name": "Riverpyre Verge",
          "id": "p17"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 46,
      "life": 20
    },
    {
      "hand_size": 8,
      "graveyard": [
        {
          "name": "Swamp",
          "id": "p2"
        }
      ],
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Demolition Field",
          "id": "p7"
        },
        {
          "tapped": false,
          "name": "Undercity Sewers",
          "id": "p14"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 47,
      "life": 20,
      "hand": [
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1",
          "playable": true
        },
        {
          "mana_cost": "{B}",
          "name": "Requiting Hex",
          "id": "p11"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Negate",
          "id": "p12"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Consult the Star Charts",
          "id": "p13",
          "playable": true
        },
        {
          "mana_cost": "{3}{B}{B}",
          "name": "Deadly Cover-Up",
          "id": "p21"
        },
        {
          "mana_cost": "{1}{B}",
          "name": "Feed the Cycle",
          "id": "p15"
        }
      ]
    }
  ],
  "available": true,
  "step": "Cleanup",
  "turn": 6
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_target_1"
}

{
  "stack": [
    {
      "name": "Boomerang Basics"
    }
  ],
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 3,
  "message": "Play instants and activated abilities",
  "action_pending": true,
  "actions_passed": 1,
  "has_playable_cards": true,
  "context": "T7 Precombat Main/Precombat Main (GPT5n Valley)",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Negate",
      "index": 1,
      "action": "cast",
      "id": "p12"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 2,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 3,
      "action": "cast",
      "id": "p5"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "index": 4,
      "action": "cast",
      "id": "p6",
      "power": "1",
      "toughness": "1"
    },
    {
      "name": "Demolition Field",
      "index": 5,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ]
}

{
  "cards": [
    {
      "mana_cost": "{U}",
      "name": "Boomerang Basics",
      "rules": [
        "Return target nonland permanent to its owner's hand. If you controlled that permanent, draw a card."
      ],
      "type": "Sorcery — Lesson"
    },
    {
      "mana_cost": "{1}{R}",
      "name": "Artist's Talent",
      "rules": [
        "(Gain the next level as a sorcery to add its ability.)",
        "Whenever you cast a noncreature spell, you may discard a card. If you do, draw a card.",
        "{2}{R}: Level 2",
        "Noncreature spells you cast cost {1} less to cast.",
        "{2}{R}: Level 3",
        "If a source you control would deal noncombat damage to an opponent or a permanent an opponent controls, it deals that much damage plus 2 instead."
      ],
      "type": "Enchantment — Class"
    },
    {
      "name": "Riverpyre Verge",
      "rules": [
        "{T}: Add {R}.",
        "{T}: Add {U}. Activate only if you control an Island or a Mountain."
      ],
      "type": "Land"
    }
  ],
  "success": true
}

{
  "cursor": 8729,
  "log": ">GPT5n Valley puts Artist's Talent from stack onto the Battlefield\nGPT5n Valley plays Riverpyre Verge\nGPT5n Valley puts Riverpyre Verge from hand onto the Battlefield\nGPT5n Valley skip attack\nGPT5n Valley turn 6 (20 - 20)\nGrok4 Stoic draws a card\nGrok4 Stoic skip attack\nGrok4 Stoic discards down to 7 hand cards\nGrok4 Stoic discards Requiting Hex\nGrok4 Stoic turn 6 (20 - 20)\nGPT5n Valley draws a card\nGPT5n Valley casts Boomerang Basics targeting Artist's Talent from hand\nGPT5n Valley - Ability triggers: Artist's Talent - Whenever you cast a noncreature spell, you may discard a card. If you do, draw a card.\nGPT5n Valley paid for Artist's Talent - Discard a card and draw a card?\nGPT5n Valley draws a card\nGPT5n Valley discards Accumulate Wisdom (source: Artist's Talent)",
  "truncated": true,
  "total_length": 8729
}

{
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 2,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T7 Postcombat Main/Postcombat Main (GPT5n Valley) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{1}{R}",
      "name": "Artist's Talent",
      "index": 0,
      "action": "cast",
      "id": "p21"
    },
    {
      "name": "Island",
      "index": 1,
      "action": "land",
      "id": "p28"
    },
    {
      "name": "Riverpyre Verge",
      "index": 2,
      "action": "land",
      "id": "p29"
    },
    {
      "name": "Mountain",
      "index": 3,
      "action": "land",
      "id": "p6"
    },
    {
      "name": "Steam Vents",
      "index": 4,
      "action": "land",
      "id": "p24"
    }
  ]
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_1"
}

{
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "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 (Grok4 Stoic) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Swamp",
      "index": 0,
      "action": "land",
      "id": "p22"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 1,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 2,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 3,
      "action": "cast",
      "id": "p5"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "index": 4,
      "action": "cast",
      "id": "p6",
      "power": "1",
      "toughness": "1"
    },
    {
      "name": "Demolition Field",
      "index": 5,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ]
}

{
  "cards": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "rules": [
        "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
      ],
      "type": "Instant"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "rules": [
        "Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)",
        "Look at the top X cards of your library, where X is the number of lands you control. Put one of those cards into your hand. If this spell was kicked, put two of those cards into your hand instead. Put the rest on the bottom of your library in a random order."
      ],
      "type": "Instant"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "rules": [
        "Flash",
        "Flying",
        "Vigilance",
        "When {this} enters, put X +1/+1 counters on him. Then draw half X cards, rounded down.",
        "Whenever an opponent searches their library, put a +1/+1 counter on {this} and draw a card."
      ],
      "power": "1",
      "type": "Legendary Creature — Bird Spirit",
      "toughness": "1"
    },
    {
      "name": "Demolition Field",
      "rules": [
        "{T}: Add {C}.",
        "{2}, {T}, Sacrifice {this}: Destroy target nonbasic land an opponent controls. That land's controller may search their library for a basic land card, put it onto the battlefield, then shuffle. You may search your library for a basic land card, put it onto the battlefield, then shuffle."
      ],
      "type": "Land"
    }
  ],
  "success": true
}

{
  "phase": "Precombat Main",
  "priority_player": "Grok4 Stoic",
  "cursor": 11,
  "stack": [],
  "active_player": "Grok4 Stoic",
  "players": [
    {
      "hand_size": 7,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        },
        {
          "name": "Three Steps Ahead",
          "id": "p18"
        },
        {
          "name": "Firebending Lesson",
          "id": "p19"
        },
        {
          "name": "Abandon Attachments",
          "id": "p20"
        },
        {
          "name": "Accumulate Wisdom",
          "id": "p24"
        },
        {
          "name": "Boomerang Basics",
          "id": "p25"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": false,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": true,
          "name": "Spirebluff Canal",
          "id": "p9"
        },
        {
          "tapped": false,
          "name": "Riverpyre Verge",
          "id": "p17"
        },
        {
          "tapped": false,
          "name": "Island",
          "id": "p23"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 43,
      "life": 20
    },
    {
      "hand_size": 8,
      "graveyard": [
        {
          "name": "Swamp",
          "id": "p2"
        },
        {
          "name": "Requiting Hex",
          "id": "p11"
        }
      ],
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Demolition Field",
          "id": "p7"
        },
        {
          "tapped": false,
          "name": "Undercity Sewers",
          "id": "p14"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 46,
      "life": 20,
      "hand": [
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1",
          "playable": true
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Negate",
          "id": "p12"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Consult the Star Charts",
          "id": "p13",
          "playable": true
        },
        {
          "mana_cost": "{3}{B}{B}",
          "name": "Deadly Cover-Up",
          "id": "p21"
        },
        {
          "mana_cost": "{1}{B}",
          "name": "Feed the Cycle",
          "id": "p15"
        },
        {
          "name": "Swamp",
          "is_land": true,
          "id": "p22",
          "playable": true
        }
      ]
    }
  ],
  "available": true,
  "step": "Precombat Main",
  "turn": 7
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}

{
  "stack": [
    {
      "name": "Artist's Talent"
    }
  ],
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 4,
  "message": "Play instants and activated abilities",
  "action_pending": true,
  "actions_passed": 1,
  "has_playable_cards": true,
  "context": "T8 Precombat Main/Precombat Main (GPT5n Valley)",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Negate",
      "index": 1,
      "action": "cast",
      "id": "p12"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 2,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 3,
      "action": "cast",
      "id": "p5"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "index": 4,
      "action": "cast",
      "id": "p6",
      "power": "1",
      "toughness": "1"
    },
    {
      "name": "Demolition Field",
      "index": 5,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ]
}

{
  "cards": [
    {
      "mana_cost": "{1}{R}",
      "name": "Artist's Talent",
      "rules": [
        "(Gain the next level as a sorcery to add its ability.)",
        "Whenever you cast a noncreature spell, you may discard a card. If you do, draw a card.",
        "{2}{R}: Level 2",
        "Noncreature spells you cast cost {1} less to cast.",
        "{2}{R}: Level 3",
        "If a source you control would deal noncombat damage to an opponent or a permanent an opponent controls, it deals that much damage plus 2 instead."
      ],
      "type": "Enchantment — Class"
    }
  ],
  "success": true
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_1"
}

{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "context": "T8 Precombat Main/Precombat Main (GPT5n Valley)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play instants and activated abilities",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 1,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 2,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Demolition Field",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ],
  "action_pending": true
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}

{
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T8 Postcombat Main/Postcombat Main (GPT5n Valley) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "name": "Riverpyre Verge",
      "index": 0,
      "action": "land",
      "id": "p29"
    },
    {
      "mana_cost": "{U}",
      "name": "Gran-Gran",
      "index": 1,
      "action": "cast",
      "id": "p30",
      "power": "1",
      "toughness": "2"
    },
    {
      "name": "Mountain",
      "index": 2,
      "action": "land",
      "id": "p6"
    },
    {
      "name": "Steam Vents",
      "index": 3,
      "action": "land",
      "id": "p24"
    }
  ]
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}

{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "context": "T8 Postcombat Main/Postcombat Main (GPT5n Valley)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 2,
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "message": "Play instants and activated abilities",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 1,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 2,
      "action": "cast",
      "id": "p5"
    },
    {
      "name": "Demolition Field",
      "index": 3,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ],
  "action_pending": true
}

{
  "phase": "Postcombat Main",
  "priority_player": "Grok4 Stoic",
  "cursor": 12,
  "stack": [],
  "active_player": "GPT5n Valley",
  "players": [
    {
      "hand_size": 6,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        },
        {
          "name": "Three Steps Ahead",
          "id": "p18"
        },
        {
          "name": "Firebending Lesson",
          "id": "p19"
        },
        {
          "name": "Abandon Attachments",
          "id": "p20"
        },
        {
          "name": "Accumulate Wisdom",
          "id": "p24"
        },
        {
          "name": "Boomerang Basics",
          "id": "p25"
        },
        {
          "name": "Artist's Talent",
          "id": "p16"
        }
      ],
      "is_active": true,
      "is_you": false,
      "battlefield": [
        {
          "tapped": false,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": true,
          "name": "Spirebluff Canal",
          "id": "p9"
        },
        {
          "tapped": false,
          "name": "Riverpyre Verge",
          "id": "p17"
        },
        {
          "tapped": true,
          "name": "Island",
          "id": "p23"
        },
        {
          "tapped": false,
          "name": "Riverpyre Verge",
          "id": "p26"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 42,
      "life": 20
    },
    {
      "hand_size": 6,
      "graveyard": [
        {
          "name": "Swamp",
          "id": "p2"
        },
        {
          "name": "Requiting Hex",
          "id": "p11"
        },
        {
          "name": "Negate",
          "id": "p12"
        }
      ],
      "is_active": false,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Demolition Field",
          "id": "p7"
        },
        {
          "tapped": true,
          "name": "Undercity Sewers",
          "id": "p14"
        },
        {
          "tapped": true,
          "name": "Swamp",
          "id": "p22"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 46,
      "life": 20,
      "hand": [
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1"
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Consult the Star Charts",
          "id": "p13",
          "playable": true
        },
        {
          "mana_cost": "{3}{B}{B}",
          "name": "Deadly Cover-Up",
          "id": "p21"
        },
        {
          "mana_cost": "{1}{B}",
          "name": "Feed the Cycle",
          "id": "p15"
        }
      ]
    }
  ],
  "available": true,
  "step": "Postcombat Main",
  "turn": 8
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "passed_priority"
}

{
  "stack": [
    {
      "name": "Monument to Endurance"
    }
  ],
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 4,
  "message": "Play instants and activated abilities",
  "action_pending": true,
  "actions_passed": 1,
  "has_playable_cards": true,
  "context": "T9 Precombat Main/Precombat Main (GPT5n Valley)",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 1,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 2,
      "action": "cast",
      "id": "p5"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "index": 3,
      "action": "cast",
      "id": "p6",
      "power": "1",
      "toughness": "1"
    },
    {
      "name": "Demolition Field",
      "index": 4,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ]
}

{
  "cards": [
    {
      "mana_cost": "{3}",
      "name": "Monument to Endurance",
      "rules": [
        "Whenever you discard a card, choose one that hasn't been chosen this turn —: &bull Draw a card.: &bull Create a Treasure token.: &bull Each opponent loses 3 life.: "
      ],
      "type": "Artifact"
    }
  ],
  "success": true
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_0"
}

{
  "phase": "Precombat Main",
  "priority_player": "Grok4 Stoic",
  "cursor": 13,
  "stack": [
    {
      "name": "Three Steps Ahead",
      "rules": [
        "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
      ],
      "id": "p29"
    },
    {
      "name": "Gran-Gran",
      "rules": [
        "Whenever {this} becomes tapped, draw a card, then discard a card.",
        "Noncreature spells you cast cost {1} less to cast as long as there are three or more Lesson cards in your graveyard.",
        ": ",
        "Lesson cards in your graveyard: 5"
      ],
      "id": "p30"
    }
  ],
  "active_player": "GPT5n Valley",
  "players": [
    {
      "hand_size": 5,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        },
        {
          "name": "Three Steps Ahead",
          "id": "p18"
        },
        {
          "name": "Firebending Lesson",
          "id": "p19"
        },
        {
          "name": "Abandon Attachments",
          "id": "p20"
        },
        {
          "name": "Accumulate Wisdom",
          "id": "p24"
        },
        {
          "name": "Boomerang Basics",
          "id": "p25"
        },
        {
          "name": "Artist's Talent",
          "id": "p16"
        }
      ],
      "is_active": true,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": true,
          "name": "Spirebluff Canal",
          "id": "p9"
        },
        {
          "tapped": false,
          "name": "Riverpyre Verge",
          "id": "p17"
        },
        {
          "tapped": true,
          "name": "Island",
          "id": "p23"
        },
        {
          "tapped": true,
          "name": "Riverpyre Verge",
          "id": "p26"
        },
        {
          "tapped": false,
          "name": "Monument to Endurance",
          "id": "p28"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 41,
      "life": 20
    },
    {
      "hand_size": 6,
      "graveyard": [
        {
          "name": "Swamp",
          "id": "p2"
        },
        {
          "name": "Requiting Hex",
          "id": "p11"
        },
        {
          "name": "Negate",
          "id": "p12"
        }
      ],
      "is_active": false,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Demolition Field",
          "id": "p7"
        },
        {
          "tapped": false,
          "name": "Undercity Sewers",
          "id": "p14"
        },
        {
          "tapped": false,
          "name": "Swamp",
          "id": "p22"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 45,
      "life": 20,
      "hand": [
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1",
          "playable": true
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Consult the Star Charts",
          "id": "p13",
          "playable": true
        },
        {
          "mana_cost": "{3}{B}{B}",
          "name": "Deadly Cover-Up",
          "id": "p21"
        },
        {
          "mana_cost": "{1}{B}",
          "name": "Feed the Cycle",
          "id": "p15"
        },
        {
          "name": "Watery Grave",
          "is_land": true,
          "id": "p27"
        }
      ]
    }
  ],
  "available": true,
  "step": "Precombat Main",
  "turn": 9
}

{
  "actions_passed": 1,
  "has_playable_cards": true,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "context": "T9 Postcombat Main/Postcombat Main (GPT5n Valley)",
  "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": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 0,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 1,
      "action": "cast",
      "id": "p5"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "index": 2,
      "action": "cast",
      "id": "p6",
      "power": "1",
      "toughness": "1"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Feed the Cycle",
      "index": 3,
      "action": "cast",
      "id": "p15"
    },
    {
      "name": "Demolition Field",
      "index": 4,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ],
  "action_pending": true
}

{
  "phase": "Postcombat Main",
  "priority_player": "Grok4 Stoic",
  "cursor": 16,
  "stack": [],
  "active_player": "GPT5n Valley",
  "players": [
    {
      "hand_size": 5,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        },
        {
          "name": "Three Steps Ahead",
          "id": "p18"
        },
        {
          "name": "Firebending Lesson",
          "id": "p19"
        },
        {
          "name": "Abandon Attachments",
          "id": "p20"
        },
        {
          "name": "Accumulate Wisdom",
          "id": "p24"
        },
        {
          "name": "Boomerang Basics",
          "id": "p25"
        },
        {
          "name": "Artist's Talent",
          "id": "p16"
        },
        {
          "name": "Stock Up",
          "id": "p33"
        }
      ],
      "is_active": true,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": true,
          "name": "Spirebluff Canal",
          "id": "p9"
        },
        {
          "tapped": true,
          "name": "Riverpyre Verge",
          "id": "p17"
        },
        {
          "tapped": true,
          "name": "Island",
          "id": "p23"
        },
        {
          "tapped": true,
          "name": "Riverpyre Verge",
          "id": "p26"
        },
        {
          "tapped": false,
          "name": "Monument to Endurance",
          "id": "p28"
        },
        {
          "tapped": false,
          "name": "Gran-Gran",
          "id": "p31",
          "power": "1",
          "toughness": "2",
          "summoning_sick": true
        },
        {
          "tapped": true,
          "name": "Mountain",
          "id": "p32"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 39,
      "life": 20
    },
    {
      "hand_size": 7,
      "graveyard": [
        {
          "name": "Swamp",
          "id": "p2"
        },
        {
          "name": "Requiting Hex",
          "id": "p11"
        },
        {
          "name": "Negate",
          "id": "p12"
        }
      ],
      "is_active": false,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Demolition Field",
          "id": "p7"
        },
        {
          "tapped": false,
          "name": "Undercity Sewers",
          "id": "p14"
        },
        {
          "tapped": false,
          "name": "Swamp",
          "id": "p22"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 45,
      "life": 20,
      "hand": [
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1",
          "playable": true
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Consult the Star Charts",
          "id": "p13",
          "playable": true
        },
        {
          "mana_cost": "{3}{B}{B}",
          "name": "Deadly Cover-Up",
          "id": "p21"
        },
        {
          "mana_cost": "{1}{B}",
          "name": "Feed the Cycle",
          "id": "p15",
          "playable": true
        },
        {
          "name": "Watery Grave",
          "is_land": true,
          "id": "p27"
        }
      ]
    }
  ],
  "available": true,
  "step": "Postcombat Main",
  "turn": 9
}

{
  "cards": [
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "rules": [
        "Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)",
        "Look at the top X cards of your library, where X is the number of lands you control. Put one of those cards into your hand. If this spell was kicked, put two of those cards into your hand instead. Put the rest on the bottom of your library in a random order."
      ],
      "type": "Instant",
      "object_id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "rules": [
        "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
      ],
      "type": "Instant",
      "object_id": "p5"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "rules": [
        "Flash",
        "Flying",
        "Vigilance",
        "When {this} enters, put X +1/+1 counters on him. Then draw half X cards, rounded down.",
        "Whenever an opponent searches their library, put a +1/+1 counter on {this} and draw a card."
      ],
      "power": "1",
      "type": "Legendary Creature  - Bird Spirit",
      "toughness": "1",
      "object_id": "p6"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Feed the Cycle",
      "rules": [
        "As an additional cost to cast this spell, forage or pay {B}.: ",
        "Destroy target creature or planeswalker."
      ],
      "type": "Instant",
      "object_id": "p15"
    },
    {
      "name": "Demolition Field",
      "rules": [
        "{T}: Add {C}.",
        "{2}, {T}, Sacrifice {this}: Destroy target nonbasic land an opponent controls. That land's controller may search their library for a basic land card, put it onto the battlefield, then shuffle. You may search your library for a basic land card, put it onto the battlefield, then shuffle."
      ],
      "type": "Land",
      "object_id": "p7"
    },
    {
      "mana_cost": "{3}",
      "name": "Monument to Endurance",
      "rules": [
        "Whenever you discard a card, choose one that hasn't been chosen this turn —: &bull Draw a card.: &bull Create a Treasure token.: &bull Each opponent loses 3 life.: "
      ],
      "type": "Artifact",
      "object_id": "p28"
    },
    {
      "mana_cost": "{U}",
      "name": "Gran-Gran",
      "rules": [
        "Whenever {this} becomes tapped, draw a card, then discard a card.",
        "Noncreature spells you cast cost {1} less to cast as long as there are three or more Lesson cards in your graveyard.",
        ": ",
        "Lesson cards in your graveyard: 5"
      ],
      "power": "1",
      "type": "Legendary Creature  - Human Peasant Ally",
      "toughness": "2",
      "object_id": "p31"
    },
    {
      "name": "Riverpyre Verge",
      "rules": [
        "{T}: Add {R}.",
        "{T}: Add {U}. Activate only if you control an Island or a Mountain.",
        ": ",
        "ICON_GOODYou control an Island or a Mountain"
      ],
      "type": "Land",
      "object_id": "p17"
    }
  ],
  "success": true
}

{
  "action_type": "GAME_TARGET",
  "players": "GPT5n Valley(20hp), Grok4 Stoic(you,20hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "can_cancel": false,
  "untapped_lands": 4,
  "message": "Select a card to discard",
  "required": true,
  "action_pending": true,
  "actions_passed": 1,
  "context": "T9 End/Cleanup (Grok4 Stoic)",
  "respond_with": "id=\"pN\" or index=N",
  "choices": [
    {
      "name": "Gloomlake Verge",
      "target_type": "card",
      "index": 0,
      "id": "p34"
    },
    {
      "name": "Three Steps Ahead",
      "target_type": "card",
      "index": 1,
      "id": "p3"
    },
    {
      "name": "Consult the Star Charts",
      "target_type": "card",
      "index": 2,
      "id": "p13"
    },
    {
      "name": "Deadly Cover-Up",
      "target_type": "card",
      "index": 3,
      "id": "p21"
    },
    {
      "name": "Three Steps Ahead",
      "target_type": "card",
      "index": 4,
      "id": "p5"
    },
    {
      "name": "Wan Shi Tong, Librarian",
      "target_type": "card",
      "index": 5,
      "id": "p6"
    },
    {
      "name": "Feed the Cycle",
      "target_type": "card",
      "index": 6,
      "id": "p15"
    },
    {
      "name": "Watery Grave",
      "target_type": "card",
      "index": 7,
      "id": "p27"
    }
  ]
}

{
  "phase": "End",
  "priority_player": "Grok4 Stoic",
  "cursor": 17,
  "stack": [],
  "active_player": "Grok4 Stoic",
  "players": [
    {
      "hand_size": 5,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        },
        {
          "name": "Three Steps Ahead",
          "id": "p18"
        },
        {
          "name": "Firebending Lesson",
          "id": "p19"
        },
        {
          "name": "Abandon Attachments",
          "id": "p20"
        },
        {
          "name": "Accumulate Wisdom",
          "id": "p24"
        },
        {
          "name": "Boomerang Basics",
          "id": "p25"
        },
        {
          "name": "Artist's Talent",
          "id": "p16"
        },
        {
          "name": "Stock Up",
          "id": "p33"
        }
      ],
      "is_active": false,
      "is_you": false,
      "battlefield": [
        {
          "tapped": true,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": true,
          "name": "Spirebluff Canal",
          "id": "p9"
        },
        {
          "tapped": true,
          "name": "Riverpyre Verge",
          "id": "p17"
        },
        {
          "tapped": true,
          "name": "Island",
          "id": "p23"
        },
        {
          "tapped": true,
          "name": "Riverpyre Verge",
          "id": "p26"
        },
        {
          "tapped": false,
          "name": "Monument to Endurance",
          "id": "p28"
        },
        {
          "tapped": false,
          "name": "Gran-Gran",
          "id": "p31",
          "power": "1",
          "toughness": "2",
          "summoning_sick": true
        },
        {
          "tapped": true,
          "name": "Mountain",
          "id": "p32"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 39,
      "life": 20
    },
    {
      "hand_size": 8,
      "graveyard": [
        {
          "name": "Swamp",
          "id": "p2"
        },
        {
          "name": "Requiting Hex",
          "id": "p11"
        },
        {
          "name": "Negate",
          "id": "p12"
        }
      ],
      "is_active": true,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Demolition Field",
          "id": "p7"
        },
        {
          "tapped": false,
          "name": "Undercity Sewers",
          "id": "p14"
        },
        {
          "tapped": false,
          "name": "Swamp",
          "id": "p22"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 44,
      "life": 20,
      "hand": [
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1",
          "playable": true
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Consult the Star Charts",
          "id": "p13",
          "playable": true
        },
        {
          "mana_cost": "{3}{B}{B}",
          "name": "Deadly Cover-Up",
          "id": "p21"
        },
        {
          "mana_cost": "{1}{B}",
          "name": "Feed the Cycle",
          "id": "p15",
          "playable": true
        },
        {
          "name": "Watery Grave",
          "is_land": true,
          "id": "p27"
        },
        {
          "name": "Gloomlake Verge",
          "is_land": true,
          "id": "p34"
        }
      ]
    }
  ],
  "available": true,
  "step": "Cleanup",
  "turn": 9
}

{
  "success": true,
  "mana_cost": "{3}",
  "name": "Monument to Endurance",
  "rules": [
    "Whenever you discard a card, choose one that hasn't been chosen this turn —: &bull Draw a card.: &bull Create a Treasure token.: &bull Each opponent loses 3 life.: "
  ],
  "type": "Artifact"
}

{
  "cursor": 14442,
  "log": "0C4DE' object_id='04514f6f-17b8-440f-be70-9074ded25548'>Mountain\nGPT5n Valley puts Mountain from hand onto the Battlefield\nGPT5n Valley skip attack\nGPT5n Valley casts Stock Up from hand\nGPT5n Valley puts a card from library into their hand\nGPT5n Valley puts a card from library into their hand\nGPT5n Valley puts a card from library to the bottom of their library (source: Stock Up)\nGPT5n Valley puts a card from library to the bottom of their library (source: Stock Up)\nGPT5n Valley puts a card from library to the bottom of their library (source: Stock Up)\nGPT5n Valley puts Stock Up from stack into their graveyard\nGPT5n Valley turn 9 (20 - 20)\nGrok4 Stoic draws a card\nGrok4 Stoic skip attack\nGrok4 Stoic discards down to 7 hand cards\nGrok4 Stoic discards Gloomlake Verge\nGrok4 Stoic turn 9 (20 - 20)\nGPT5n Valley draws a card\nGPT5n Valley casts Monument to Endurance from hand",
  "truncated": true,
  "total_length": 14442
}

{
  "cards": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "rules": [
        "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
      ],
      "type": "Instant"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "rules": [
        "Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)",
        "Look at the top X cards of your library, where X is the number of lands you control. Put one of those cards into your hand. If this spell was kicked, put two of those cards into your hand instead. Put the rest on the bottom of your library in a random order."
      ],
      "type": "Instant"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "rules": [
        "Flash",
        "Flying",
        "Vigilance",
        "When {this} enters, put X +1/+1 counters on him. Then draw half X cards, rounded down.",
        "Whenever an opponent searches their library, put a +1/+1 counter on {this} and draw a card."
      ],
      "power": "1",
      "type": "Legendary Creature — Bird Spirit",
      "toughness": "1"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Feed the Cycle",
      "rules": [
        "As an additional cost to cast this spell, forage or pay {B}.: ",
        "Destroy target creature or planeswalker."
      ],
      "type": "Instant"
    },
    {
      "mana_cost": "{3}{B}{B}",
      "name": "Deadly Cover-Up",
      "rules": [
        "As an additional cost to cast this spell, you may collect evidence 6. (Exile cards with total mana value 6 or greater from your graveyard)",
        "Destroy all creatures. If evidence was collected, exile a card from an opponent's graveyard. Then search its owner's graveyard, hand, and library for any number of cards with that name and exile them. That player shuffles, then draws a card for each card exiled from their hand this way."
      ],
      "type": "Sorcery"
    }
  ],
  "success": true
}

{
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(you,20hp), Grok4 Stoic(20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 4,
  "message": "Play spells and abilities",
  "action_pending": true,
  "actions_passed": 1,
  "land_drops_used": 0,
  "has_playable_cards": true,
  "context": "T10 Precombat Main/Precombat Main (GPT5n Valley) YOUR_MAIN",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{1}{U/R}",
      "name": "Abandon Attachments",
      "index": 0,
      "action": "cast",
      "id": "p44"
    },
    {
      "name": "Steam Vents",
      "index": 1,
      "action": "land",
      "id": "p24"
    },
    {
      "name": "Multiversal Passage",
      "index": 2,
      "action": "land",
      "id": "p40"
    },
    {
      "mana_cost": "{1}{R}",
      "name": "Combustion Technique",
      "index": 3,
      "action": "cast",
      "id": "p7"
    }
  ]
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_CHOICE",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_2"
}

{
  "combat_phase": "attackers",
  "actions_passed": 0,
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(you,18hp), Grok4 Stoic(20hp)",
  "context": "T10 Combat/Declare Attackers (GPT5n Valley)",
  "stop_reason": "combat",
  "response_type": "boolean",
  "untapped_lands": 5,
  "respond_with": "answer=true (confirm) or answer=false (pass)",
  "message": "Select attackers",
  "action_pending": true
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_SELECT",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "confirmed"
}

{
  "stack": [
    {
      "name": "Ability"
    }
  ],
  "action_type": "GAME_TARGET",
  "players": "GPT5n Valley(you,18hp), Grok4 Stoic(20hp)",
  "stop_reason": "non_priority_action",
  "response_type": "index",
  "can_cancel": false,
  "untapped_lands": 5,
  "message": "Select a card to discard",
  "required": true,
  "action_pending": true,
  "actions_passed": 1,
  "context": "T10 Combat/Declare Attackers (GPT5n Valley)",
  "respond_with": "id=\"pN\" or index=N",
  "choices": [
    {
      "name": "Steam Vents",
      "target_type": "card",
      "index": 0,
      "id": "p24"
    },
    {
      "name": "Island",
      "target_type": "card",
      "index": 1,
      "id": "p46"
    },
    {
      "name": "Abandon Attachments",
      "target_type": "card",
      "index": 2,
      "id": "p44"
    },
    {
      "name": "Spell Snare",
      "target_type": "card",
      "index": 3,
      "id": "p10"
    },
    {
      "name": "Combustion Technique",
      "target_type": "card",
      "index": 4,
      "id": "p7"
    }
  ]
}

{
  "next_action_pending": true,
  "next_action_type": "GAME_CHOOSE_ABILITY",
  "next_action_hint": "Call get_action_choices or choose_action to see details, or pass_priority to continue.",
  "success": true,
  "action_taken": "selected_target_2"
}

{
  "stack": [
    {
      "name": "Ability"
    }
  ],
  "action_type": "GAME_SELECT",
  "players": "GPT5n Valley(18hp), Grok4 Stoic(you,20hp)",
  "stop_reason": "playable_cards",
  "response_type": "select",
  "untapped_lands": 4,
  "message": "Play instants and activated abilities",
  "action_pending": true,
  "actions_passed": 1,
  "has_playable_cards": true,
  "context": "T10 Combat/Declare Attackers (GPT5n Valley)",
  "respond_with": "id=\"pN\" or index=N to play, or answer=false to pass",
  "choices": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 0,
      "action": "cast",
      "id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "index": 1,
      "action": "cast",
      "id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "index": 2,
      "action": "cast",
      "id": "p5"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "index": 3,
      "action": "cast",
      "id": "p6",
      "power": "1",
      "toughness": "1"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Feed the Cycle",
      "index": 4,
      "action": "cast",
      "id": "p15"
    },
    {
      "name": "Demolition Field",
      "index": 5,
      "action": "activate",
      "playable_abilities": [
        "{2}, {T}, Sacrifice {this}: Destroy target nonbas..."
      ],
      "id": "p7"
    }
  ]
}

{
  "phase": "Combat",
  "priority_player": "Grok4 Stoic",
  "cursor": 18,
  "stack": [
    {
      "name": "Ability",
      "rules": [
        "Whenever you discard a card, choose one that hasn't been chosen this turn —: &bull Draw a card.: &bull Create a Treasure token.: &bull Each opponent loses 3 life.: ",
        "Chosen mode: draw a card."
      ],
      "id": "p38"
    }
  ],
  "active_player": "GPT5n Valley",
  "players": [
    {
      "hand_size": 5,
      "graveyard": [
        {
          "name": "Iroh's Demonstration",
          "id": "p10"
        },
        {
          "name": "Three Steps Ahead",
          "id": "p18"
        },
        {
          "name": "Firebending Lesson",
          "id": "p19"
        },
        {
          "name": "Abandon Attachments",
          "id": "p20"
        },
        {
          "name": "Accumulate Wisdom",
          "id": "p24"
        },
        {
          "name": "Boomerang Basics",
          "id": "p25"
        },
        {
          "name": "Artist's Talent",
          "id": "p16"
        },
        {
          "name": "Stock Up",
          "id": "p33"
        },
        {
          "name": "Abandon Attachments",
          "id": "p37"
        }
      ],
      "is_active": true,
      "is_you": false,
      "battlefield": [
        {
          "tapped": false,
          "name": "Steam Vents",
          "id": "p8"
        },
        {
          "tapped": true,
          "name": "Spirebluff Canal",
          "id": "p9"
        },
        {
          "tapped": false,
          "name": "Riverpyre Verge",
          "id": "p17"
        },
        {
          "tapped": true,
          "name": "Island",
          "id": "p23"
        },
        {
          "tapped": false,
          "name": "Riverpyre Verge",
          "id": "p26"
        },
        {
          "tapped": false,
          "name": "Monument to Endurance",
          "id": "p28"
        },
        {
          "tapped": true,
          "name": "Gran-Gran",
          "id": "p31",
          "power": "1",
          "toughness": "2",
          "summoning_sick": false
        },
        {
          "tapped": false,
          "name": "Mountain",
          "id": "p32"
        },
        {
          "tapped": false,
          "name": "Monument to Endurance",
          "id": "p35"
        },
        {
          "tapped": false,
          "name": "Multiversal Passage",
          "id": "p36"
        }
      ],
      "name": "GPT5n Valley",
      "library_size": 36,
      "life": 18
    },
    {
      "hand_size": 7,
      "graveyard": [
        {
          "name": "Swamp",
          "id": "p2"
        },
        {
          "name": "Requiting Hex",
          "id": "p11"
        },
        {
          "name": "Negate",
          "id": "p12"
        },
        {
          "name": "Gloomlake Verge",
          "id": "p34"
        }
      ],
      "is_active": false,
      "is_you": true,
      "battlefield": [
        {
          "tapped": false,
          "name": "Watery Grave",
          "id": "p4"
        },
        {
          "tapped": false,
          "name": "Demolition Field",
          "id": "p7"
        },
        {
          "tapped": false,
          "name": "Undercity Sewers",
          "id": "p14"
        },
        {
          "tapped": false,
          "name": "Swamp",
          "id": "p22"
        }
      ],
      "name": "Grok4 Stoic",
      "library_size": 44,
      "life": 20,
      "hand": [
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p3",
          "playable": true
        },
        {
          "mana_cost": "{U}",
          "name": "Three Steps Ahead",
          "id": "p5",
          "playable": true
        },
        {
          "mana_cost": "{X}{U}{U}",
          "name": "Wan Shi Tong, Librarian",
          "id": "p6",
          "power": "1",
          "toughness": "1",
          "playable": true
        },
        {
          "mana_cost": "{1}{U}",
          "name": "Consult the Star Charts",
          "id": "p13",
          "playable": true
        },
        {
          "mana_cost": "{3}{B}{B}",
          "name": "Deadly Cover-Up",
          "id": "p21"
        },
        {
          "mana_cost": "{1}{B}",
          "name": "Feed the Cycle",
          "id": "p15",
          "playable": true
        },
        {
          "name": "Watery Grave",
          "is_land": true,
          "id": "p27"
        }
      ]
    }
  ],
  "available": true,
  "step": "Declare Attackers",
  "combat": [
    {
      "blocked": false,
      "defending": "Grok4 Stoic",
      "attackers": [
        {
          "name": "Gran-Gran",
          "id": "p31",
          "power": "1",
          "toughness": "2"
        }
      ]
    }
  ],
  "turn": 10
}

{
  "cards": [
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "rules": [
        "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
      ],
      "type": "Instant",
      "object_id": "p3"
    },
    {
      "mana_cost": "{1}{U}",
      "name": "Consult the Star Charts",
      "rules": [
        "Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)",
        "Look at the top X cards of your library, where X is the number of lands you control. Put one of those cards into your hand. If this spell was kicked, put two of those cards into your hand instead. Put the rest on the bottom of your library in a random order."
      ],
      "type": "Instant",
      "object_id": "p13"
    },
    {
      "mana_cost": "{U}",
      "name": "Three Steps Ahead",
      "rules": [
        "Spree (Choose one or more additional costs.): + {1}{U} — Counter target spell.: + {3} — Create a token that's a copy of target artifact or creature you control.: + {2} — Draw two cards, then discard a card.: "
      ],
      "type": "Instant",
      "object_id": "p5"
    },
    {
      "mana_cost": "{X}{U}{U}",
      "name": "Wan Shi Tong, Librarian",
      "rules": [
        "Flash",
        "Flying",
        "Vigilance",
        "When {this} enters, put X +1/+1 counters on him. Then draw half X cards, rounded down.",
        "Whenever an opponent searches their library, put a +1/+1 counter on {this} and draw a card."
      ],
      "power": "1",
      "type": "Legendary Creature  - Bird Spirit",
      "toughness": "1",
      "object_id": "p6"
    },
    {
      "mana_cost": "{1}{B}",
      "name": "Feed the Cycle",
      "rules": [
        "As an additional cost to cast this spell, forage or pay {B}.: ",
        "Destroy target creature or planeswalker."
      ],
      "type": "Instant",
      "object_id": "p15"
    },
    {
      "name": "Demolition Field",
      "rules": [
        "{T}: Add {C}.",
        "{2}, {T}, Sacrifice {this}: Destroy target nonbasic land an opponent controls. That land's controller may search their library for a basic land card, put it onto the battlefield, then shuffle. You may search your library for a basic land card, put it onto the battlefield, then shuffle."
      ],
      "type": "Land",
      "object_id": "p7"
    }
  ],
  "success": true
}

{
  "success": true,
  "mana_cost": "{U}",
  "name": "Gran-Gran",
  "rules": [
    "Whenever {this} becomes tapped, draw a card, then discard a card.",
    "Noncreature spells you cast cost {1} less to cast as long as there are three or more Lesson cards in your graveyard.",
    ": ",
    "Lesson cards in your graveyard: 6"
  ],
  "power": "1",
  "type": "Legendary Creature  - Human Peasant Ally",
  "toughness": "2"
}

{
  "actions_passed": 0,
  "stop_reason": "game_over",
  "game_over": true,
  "action_pending": false
}

{
  "error": ""
}

{
  "error": ""
}

{
  "error": ""
}

{
  "error": ""
}

{
  "error": ""
}

{
  "error": ""
}

{
  "error": ""
}

{
  "error": ""
}