SRD 5.2 SRD 5.2.1 (current printing)

SRD 5.1 SRD 5.1

Ancient Black Dragon

Gargantuan Dragon, Chaotic Evil

AC 22 (natural armor)

Initiative +16

HP 367 (21d20 + 147)

Speed 40 ft., fly 80 ft., swim 40 ft., climb 20 ft., crawl 20 ft.

STR DEX CON INT WIS CHA
Score
Save
Skills
,
Immunities
Acid
Senses
passive Perception 26, darkvision 120 ft., blindsight 60 ft.
Languages
Common, Draconic
CR
21 (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

Dexterity Saving Throw: DC 22, each creature in a 90-foot-long, 10-foot-wide Line. Failure: . Success: Half damage.
The dragon makes three Rend attacks. It can replace one attack with a use of Spellcasting to cast Acid Arrow (level 4 version).
Melee Attack Roll: , reach 15 ft. .
The dragon casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 21, to hit with spell attacks): - **At Will:** Detect Magic, Fear, Acid Arrow - **1/Day Each:** Create Undead, Speak with Dead, Vitriolic Sphere

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.
Cloud of Insects. Dexterity Saving Throw: DC 21, one creature the dragon can see within 120 feet. Failure: , 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.

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

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


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