{"index":"ancient-black-dragon","name":"Ancient Black Dragon","size":"Gargantuan","type":"dragon","alignment":"chaotic evil","armor_class":[{"type":"natural","value":22}],"hit_points":367,"hit_dice":"21d20","hit_points_roll":"21d20+147","speed":{"walk":"40 ft.","fly":"80 ft.","swim":"40 ft."},"strength":27,"dexterity":14,"constitution":25,"intelligence":16,"wisdom":15,"charisma":19,"proficiencies":[{"value":9,"proficiency":{"index":"saving-throw-dex","name":"Saving Throw: DEX","url":"/api/2014/proficiencies/saving-throw-dex"}},{"value":14,"proficiency":{"index":"saving-throw-con","name":"Saving Throw: CON","url":"/api/2014/proficiencies/saving-throw-con"}},{"value":9,"proficiency":{"index":"saving-throw-wis","name":"Saving Throw: WIS","url":"/api/2014/proficiencies/saving-throw-wis"}},{"value":11,"proficiency":{"index":"saving-throw-cha","name":"Saving Throw: CHA","url":"/api/2014/proficiencies/saving-throw-cha"}},{"value":16,"proficiency":{"index":"skill-perception","name":"Skill: Perception","url":"/api/2014/proficiencies/skill-perception"}},{"value":9,"proficiency":{"index":"skill-stealth","name":"Skill: Stealth","url":"/api/2014/proficiencies/skill-stealth"}}],"damage_vulnerabilities":[],"damage_resistances":[],"damage_immunities":["acid"],"condition_immunities":[],"senses":{"blindsight":"60 ft.","darkvision":"120 ft.","passive_perception":26},"languages":"Common, Draconic","challenge_rating":21,"proficiency_bonus":7,"xp":33000,"special_abilities":[{"name":"Amphibious","desc":"The dragon can breathe air and water.","damage":[]},{"name":"Legendary Resistance","desc":"If the dragon fails a saving throw, it can choose to succeed instead.","usage":{"type":"per day","times":3,"rest_types":[]},"damage":[]}],"actions":[{"damage":[],"name":"Multiattack","multiattack_type":"actions","desc":"The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.","actions":[{"action_name":"Frightful Presence","count":"1","type":"ability"},{"action_name":"Bite","count":"1","type":"melee"},{"action_name":"Claw","count":"2","type":"melee"}]},{"name":"Bite","desc":"Melee Weapon Attack: +15 to hit, reach 15 ft., one target. Hit: 19 (2d10 + 8) piercing damage plus 9 (2d8) acid damage.","attack_bonus":15,"damage":[{"damage_type":{"index":"piercing","name":"Piercing","url":"/api/2014/damage-types/piercing"},"damage_dice":"2d10+8"},{"damage_type":{"index":"acid","name":"Acid","url":"/api/2014/damage-types/acid"},"damage_dice":"2d8"}],"actions":[]},{"name":"Claw","desc":"Melee Weapon Attack: +15 to hit, reach 10 ft., one target. Hit: 15 (2d6 + 8) slashing damage.","attack_bonus":15,"damage":[{"damage_type":{"index":"slashing","name":"Slashing","url":"/api/2014/damage-types/slashing"},"damage_dice":"2d6+8"}],"actions":[]},{"name":"Tail","desc":"Melee Weapon Attack: +15 to hit, reach 20 ft., one target. Hit: 17 (2d8 + 8) bludgeoning damage.","attack_bonus":15,"damage":[{"damage_type":{"index":"bludgeoning","name":"Bludgeoning","url":"/api/2014/damage-types/bludgeoning"},"damage_dice":"2d8+8"}],"actions":[]},{"damage":[],"name":"Frightful Presence","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 19 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.","dc":{"dc_type":{"index":"wis","name":"WIS","url":"/api/2014/ability-scores/wis"},"dc_value":19,"success_type":"none"},"actions":[]},{"name":"Acid Breath","desc":"The dragon exhales acid in a 90-foot line that is 10 feet wide. Each creature in that line must make a DC 22 Dexterity saving throw, taking 67 (15d8) acid damage on a failed save, or half as much damage on a successful one.","usage":{"type":"recharge on roll","dice":"1d6","min_value":5},"dc":{"dc_type":{"index":"dex","name":"DEX","url":"/api/2014/ability-scores/dex"},"dc_value":22,"success_type":"half"},"damage":[{"damage_type":{"index":"acid","name":"Acid","url":"/api/2014/damage-types/acid"},"damage_dice":"15d8"}],"actions":[]}],"legendary_actions":[{"name":"Detect","desc":"The dragon makes a Wisdom (Perception) check.","damage":[]},{"name":"Tail Attack","desc":"The dragon makes a tail attack.","damage":[]},{"name":"Wing Attack (Costs 2 Actions)","desc":"The dragon beats its wings. Each creature within 15 ft. of the dragon must succeed on a DC 23 Dexterity saving throw or take 15 (2d6 + 8) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.","dc":{"dc_type":{"index":"dex","name":"DEX","url":"/api/2014/ability-scores/dex"},"dc_value":23,"success_type":"none"},"damage":[{"damage_type":{"index":"bludgeoning","name":"Bludgeoning","url":"/api/2014/damage-types/bludgeoning"},"damage_dice":"2d6+8"}]}],"image":"/api/images/monsters/ancient-black-dragon.png","url":"/api/2014/monsters/ancient-black-dragon","updated_at":"2026-05-27T21:14:14.611Z","forms":[],"reactions":[]}