Ancient Black Dragon 5e (2024) Stat Block: AC, HP, CR, and Actions

Armor Class

Hit Points

367

(21d20 + 147)

Speed:

Walk 40 ft.,

Swim 40 ft.,

Fly 80 ft.,

STR 27 (+8)

DEX 14 (+2)

CON 25 (+7)

INT 16 (+3)

WIS 15 (+2)

CHA 22 (+6)

Saving Throws:

DEX +9

WIS +9

Skills:

Perception +16

Stealth +9

Damage Vulnerabilities: —

Damage Resistances: —

Damage Immunities: acid

Condition Immunities: —

Senses:

darkvision 120 ft., blindsight 60 ft.

Passive Perception:

Languages: Common, Draconic

CR:

(33000 XP) (41000 XP in lair)

Proficiency Bonus: 7

Traits:

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 makes three Rend attacks. It can replace one attack with a use of Spellcasting to cast Acid Arrow (level 4 version).
Rend - Melee Attack Roll: +15, reach 15 ft. Hit: 17 (2d8 + 8) Slashing damage plus 9 (2d8) Acid damage.
Acid Breath - Dexterity Saving Throw: DC 22, each creature in a 90-foot-long, 10-footwide Line. Failure: 67 (15d8) Acid damage. Success: Half damage.
Spellcasting - The dragon casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 21, +13 to hit with spell attacks):

Legendary Actions:

Cloud of Insects. Dexterity Saving Throw: DC 21, one creature the dragon can see within 120 feet. Failure: 33 (6d10) Poison damage, and the target has Disadvantage on saving throws to maintain Concentration until the end of its next turn. Failure or Success: The dragon can’t take this action again until the start of its next turn.

Frightful Presence. The dragon uses Spellcasting to cast Fear. The dragon can’t take this action again until the start of its next turn.

Pounce. The dragon moves up to half its Speed, and it makes one Rend attack.

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