SRD 5.1 SRD 5.1 (current printing)

SRD 5.2 SRD 5.2.1

Ancient Black Dragon

Gargantuan Dragon, Chaotic Evil

Armor Class 22 (natural)

Hit Points 367 (21d20 + 147)

Speed 40 ft., fly 80 ft., swim 40 ft.

STR DEX CON INT WIS CHA
() () () () () ()
Saving Throws
, , ,
Skills
,
Damage Immunities
Acid
Senses
blindsight 60 ft., darkvision 120 ft., passive perception 26
Languages
Common, Draconic
Challenge
21 (33,000 XP)

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

The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.
Melee Weapon Attack: to hit, reach 15 ft., one target. Hit: .
Melee Weapon Attack: to hit, reach 10 ft., one target. Hit: .
Melee Weapon Attack: to hit, reach 20 ft., one target. Hit: .
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.
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 on a failed save, or half as much damage on a successful one.

Legendary Actions

3 Legendary Actions 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. 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 and be knocked prone. The dragon can then fly up to half its flying speed.

Lifecycle

Follow this creature’s possible stages of maturity.

Matures into Black Dragon Wyrmling CR 2 Young Black Dragon CR 7 Adult Black Dragon CR 14
Ancient Black Dragon Current stage CR 21
Black Dragon Egg Known stage

Monster Loot: Monster Manual adds Loot to this creature. View

Creature Harvest Index: Dragons adds Loot to this creature. View


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