Bestiary

Ancient Black Dragon

Gargantuan Dragon, chaotic evil

AC22 (natural armor)HP367 (21d20 + 147)Speed40 ft., fly 80 ft., swim 40 ft., climb 20 ft., crawl 20 ft.

STR

27 (+8)

DEX

14 (+2)

CON

25 (+7)

INT

16 (+3)

WIS

15 (+2)

CHA

22 (+6)

Sensesdarkvision 120 ft., blindsight 60 ft., passive Perception 26LanguagesCommon, DraconicCR21 (33,000 XP)

Traits

Amphibious. The dragon can breathe air and water.

Legendary Resistance (4/Day, or 5/Day in Lair). If the dragon fails a saving throw, it can choose to succeed instead.

Actions

Acid Breath. Dexterity Saving Throw: DC 22, each creature in a 90-foot-long, 10-foot-wide Line. Failure: 67 (15d8) Acid damage. Success: Half damage.

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. 17 (2d8 + 8) Slashing damage plus 9 (2d8) Acid 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): - **At Will:** Detect Magic, Fear, Acid Arrow - **1/Day Each:** Create Undead, Speak with Dead, Vitriolic Sphere

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