Combat Statistics
CR 21
Challenge Rating
33,000 XP
22
Armor Class
367
Hit Points
(21d20)
Speed: {"walk":40,"fly":80,"swim":40} ft.
Strength
27
(+8)
Dexterity
14
(+2)
hit points, healing, and concentration saves." data-tooltip-category="ability_score" title="Measures health, stamina, and vital force. Affects hit points, healing, and concentration saves.">Constitution
25
(+7)
Intelligence
16
(+3)
Wisdom
15
(+2)
Charisma
19
(+4)
Skills:
Perception +16, Stealth +9
Damage Resistances: []
Damage Immunities: ["acid"]
Condition Immunities: []
Senses:
Blindsight 60 ft.,
Darkvision 120 ft.,
Passive Perception 26 ft.
passive Perception 26
Languages: ["Common", "Draconic"]
Proficiency Bonus: +7
Special Abilities
Amphibious
The dragon can breathe air and water.
Legendary Resistance
If the dragon fails a saving throw, it can choose to succeed instead.
Actions
Multiattack
The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.
Bite
Melee Weapon Attack:+ 15 to hit, reach 15 ft., one target. Hit: 19 (2d10 + 8) piercing damage plus 9 (2d8) acid damage.
Claw
Melee Weapon Attack: +15 to hit, reach 10 ft., one target. Hit: 15 (2d6 + 8) slashing damage.
Tail
Melee Weapon Attack: +15 to hit, reach 20 ft., one target. Hit: 17 (2d8 + 8) bludgeoning damage.
Frightful Presence
Each creature of the dragon's choice that is within 120 ft. 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.
Acid Breath
The dragon exhales acid in a 90-foot line that is 10 ft. 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.
Legendary Actions
The ancient black dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The ancient black dragon regains spent legendary actions at the start of its turn.
Detect
The dragon makes a Wisdom (Perception) check.
Tail Attack
The dragon makes a tail attack.
Wing Attack (Costs 2 Actions)
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.
Quick Reference
Legendary
Type: Dragon
Size: Gargantuan
Alignment: chaotic evil
Environment: Any
DM Tools
💰 Loot Generator
CR 21 | Challenge Rating: 21
Loot based on monster type, CR, and D&D 5e treasure guidelines
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