Zombie, Ancient Black Dragon

Family: Zombies

Gargantuan undead, chaotic evil

Armor Class 22 (natural armor)
Hit Points 367 (21d20 + 147)
Speed 40 ft., fly 80 ft., swim 40 ft.

STR	DEX	CON	INT	WIS	CHA
27 (+8)	8 (-1)	25 (+7)	1 (-5)	3 (-4)	5 (-3)

Damage Immunities acid, poison
Condition Immunities poisoned
Senses blindsight 60 ft., darkvision 120 ft., passive Perception 6
Languages Common, Draconic
Challenge 21 (30,000 XP)

Special Traits

• Turn Resistance. The ancient black dragon zombie has advantage on saving throws against any effect that turns undead.
• Undead Fortitude. If damage reduces the dragon zombie to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the dragon zombie drops to 1 hit point instead.

Actions

• Multiattack. The dragon zombie can use its Frightful Presence and make 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.
• Claws. 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 zombie’s choice that is within 120 feet of it 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 zombie’s Frightful Presence for the next 24 hours.
• Acid Breath (Recharge 5-6). The zombie dragon exhales acid in a 60- 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.