View source for Ancient Black Dragon

{{Gargantuan}} {{Dragon}} ({{Chromatic}}), {{Alignment|Chaotic Evil}}<br>
{{AC|22}} &nbsp;&nbsp; {{Initiative|+16|26}}<br>
{{HP|367}} (21d20 + 147)<br>
{{Speed|40 ft., Fly 80 ft., Swim 40 ft.}}<br>
{{Abilities|27|+8|+8|14|+2|+9|25|+7|+7|16|+3|+3|15|+2|+9|22|+6|+6}}
{{Skills|[[Perception]] +16, [[Stealth]] +9}}<br>
{{Immunities|Acid}}<br>
{{Senses|[[Blindsight]] 60 ft., [[Darkvision]] 120 ft.; [[Passive Perception]] 26}}<br>
{{Languages|Common, Draconic}}<br>
{{CR|Dragon|21|+7}}<br>
===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|saving throw]], it can choose to succeed instead.

===Legendary Actions===
'''''[[Legendary Action Uses]]''''': 3 (4 in Lair). Immediately after another creature.s turn, the dragon can expend a use to take one of the following actions. The dragon regains all expended uses at the start of each of its turns.

'''''[[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 Throw|saving throw]]s 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.

===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]]''''' ([[Recharge]] 5&mdash;6). [[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):

:'''At Will''': ''[[Acid Arrow]]'' (level 4 version), ''[[Detect Magic]]'', ''[[Fear]]''
:'''1/Day Each''': ''[[Create Undead]]'', ''[[Speak with Dead]]'', ''[[Vitriolic Sphere]]'' (level 5 version)
[[Category:Creatures]]
[[Category:Gargantuan Dragon]]
[[Category:Creature Type Dragon]]
[[Category:Gargantuan Creatures]]