{
  "actions": [
    {
      "actions": [
        {
          "action_name": "Frightful Presence",
          "count": "1",
          "type": "ability"
        },
        {
          "action_name": "Bite",
          "count": "1",
          "type": "melee"
        },
        {
          "action_name": "Claw",
          "count": "2",
          "type": "melee"
        }
      ],
      "damage": [],
      "desc": "The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.",
      "multiattack_type": "actions",
      "name": "Multiattack"
    },
    {
      "actions": [],
      "attack_bonus": 16,
      "damage": [
        {
          "damage_dice": "2d10+9",
          "damage_type": {
            "index": "piercing",
            "name": "Piercing",
            "url": "/api/2014/damage-types/piercing"
          }
        },
        {
          "damage_dice": "2d10",
          "damage_type": {
            "index": "lightning",
            "name": "Lightning",
            "url": "/api/2014/damage-types/lightning"
          }
        }
      ],
      "desc": "Melee Weapon Attack: +16 to hit, reach 15 ft., one target. Hit: 20 (2d10 + 9) piercing damage plus 11 (2d10) lightning damage.",
      "name": "Bite"
    },
    {
      "actions": [],
      "attack_bonus": 16,
      "damage": [
        {
          "damage_dice": "2d6+9",
          "damage_type": {
            "index": "slashing",
            "name": "Slashing",
            "url": "/api/2014/damage-types/slashing"
          }
        }
      ],
      "desc": "Melee Weapon Attack: +16 to hit, reach 10 ft., one target. Hit: 16 (2d6 + 9) slashing damage.",
      "name": "Claw"
    },
    {
      "actions": [],
      "attack_bonus": 16,
      "damage": [
        {
          "damage_dice": "2d8+9",
          "damage_type": {
            "index": "bludgeoning",
            "name": "Bludgeoning",
            "url": "/api/2014/damage-types/bludgeoning"
          }
        }
      ],
      "desc": "Melee Weapon Attack: +16 to hit, reach 20 ft., one target. Hit: 18 (2d8 + 9) bludgeoning damage.",
      "name": "Tail"
    },
    {
      "actions": [],
      "damage": [],
      "dc": {
        "dc_type": {
          "index": "wis",
          "name": "WIS",
          "url": "/api/2014/ability-scores/wis"
        },
        "dc_value": 20,
        "success_type": "none"
      },
      "desc": "Each creature of the dragon's choice that is within 120 feet of the dragon and aware of it must succeed on a DC 20 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the dragon's Frightful Presence for the next 24 hours.",
      "name": "Frightful Presence"
    },
    {
      "actions": [],
      "damage": [
        {
          "damage_dice": "16d10",
          "damage_type": {
            "index": "lightning",
            "name": "Lightning",
            "url": "/api/2014/damage-types/lightning"
          }
        }
      ],
      "dc": {
        "dc_type": {
          "index": "dex",
          "name": "DEX",
          "url": "/api/2014/ability-scores/dex"
        },
        "dc_value": 23,
        "success_type": "half"
      },
      "desc": "The dragon exhales lightning in a 120-foot line that is 10 feet wide. Each creature in that line must make a DC 23 Dexterity saving throw, taking 88 (16d10) lightning damage on a failed save, or half as much damage on a successful one.",
      "name": "Lightning Breath",
      "usage": {
        "dice": "1d6",
        "min_value": 5,
        "type": "recharge on roll"
      }
    }
  ],
  "alignment": "lawful evil",
  "armor_class": [
    {
      "type": "natural",
      "value": 22
    }
  ],
  "challenge_rating": 23,
  "charisma": 21,
  "condition_immunities": [],
  "constitution": 27,
  "damage_immunities": [
    "lightning"
  ],
  "damage_resistances": [],
  "damage_vulnerabilities": [],
  "dexterity": 10,
  "forms": [],
  "hit_dice": "26d20",
  "hit_points": 481,
  "hit_points_roll": "26d20+208",
  "image": "/api/images/monsters/ancient-blue-dragon.png",
  "index": "ancient-blue-dragon",
  "intelligence": 18,
  "languages": "Common, Draconic",
  "legendary_actions": [
    {
      "damage": [],
      "desc": "The dragon makes a Wisdom (Perception) check.",
      "name": "Detect"
    },
    {
      "damage": [],
      "desc": "The dragon makes a tail attack.",
      "name": "Tail Attack"
    },
    {
      "damage": [
        {
          "damage_dice": "2d6+9",
          "damage_type": {
            "index": "bludgeoning",
            "name": "Bludgeoning",
            "url": "/api/2014/damage-types/bludgeoning"
          }
        }
      ],
      "dc": {
        "dc_type": {
          "index": "dex",
          "name": "DEX",
          "url": "/api/2014/ability-scores/dex"
        },
        "dc_value": 24,
        "success_type": "none"
      },
      "desc": "The dragon beats its wings. Each creature within 15 ft. of the dragon must succeed on a DC 24 Dexterity saving throw or take 16 (2d6 + 9) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.",
      "name": "Wing Attack (Costs 2 Actions)"
    }
  ],
  "name": "Ancient Blue Dragon",
  "proficiencies": [
    {
      "proficiency": {
        "index": "saving-throw-dex",
        "name": "Saving Throw: DEX",
        "url": "/api/2014/proficiencies/saving-throw-dex"
      },
      "value": 7
    },
    {
      "proficiency": {
        "index": "saving-throw-con",
        "name": "Saving Throw: CON",
        "url": "/api/2014/proficiencies/saving-throw-con"
      },
      "value": 15
    },
    {
      "proficiency": {
        "index": "saving-throw-wis",
        "name": "Saving Throw: WIS",
        "url": "/api/2014/proficiencies/saving-throw-wis"
      },
      "value": 10
    },
    {
      "proficiency": {
        "index": "saving-throw-cha",
        "name": "Saving Throw: CHA",
        "url": "/api/2014/proficiencies/saving-throw-cha"
      },
      "value": 12
    },
    {
      "proficiency": {
        "index": "skill-perception",
        "name": "Skill: Perception",
        "url": "/api/2014/proficiencies/skill-perception"
      },
      "value": 17
    },
    {
      "proficiency": {
        "index": "skill-stealth",
        "name": "Skill: Stealth",
        "url": "/api/2014/proficiencies/skill-stealth"
      },
      "value": 7
    }
  ],
  "proficiency_bonus": 7,
  "reactions": [],
  "senses": {
    "blindsight": "60 ft.",
    "darkvision": "120 ft.",
    "passive_perception": 27
  },
  "size": "Gargantuan",
  "special_abilities": [
    {
      "damage": [],
      "desc": "If the dragon fails a saving throw, it can choose to succeed instead.",
      "name": "Legendary Resistance",
      "usage": {
        "rest_types": [],
        "times": 3,
        "type": "per day"
      }
    }
  ],
  "speed": {
    "burrow": "40 ft.",
    "fly": "80 ft.",
    "walk": "40 ft."
  },
  "strength": 29,
  "type": "dragon",
  "updated_at": "2026-04-01T20:35:38.253Z",
  "url": "/api/2014/monsters/ancient-blue-dragon",
  "wisdom": 17,
  "xp": 50000
}