Ancient Green Dragon

2024 SRD

Gargantuan Dragon (Chromatic), Lawful Evil

Armor Class: 21

Hit Points: 402 (23d20 + 161)

Speed: 40 ft., Fly 80 ft., Swim 40 ft.

STR

DEX

CON

INT

WIS

CHA

Saving Throws: DEX, WIS

Skills: Deception +13, Perception +17, Persuasion +13, Stealth +8

Damage Immunities:Poison

Condition Immunities: poisoned

Senses: Blindsight 60 ft., Darkvision 120 ft.; Passive Perception 27

Languages: Common, Draconic

Challenge: 22

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.

Multiattack. The dragon makes three Rend attacks. It can replace one attack with a use of Spellcasting to cast Mind Spike (level 5 version).
Rend. Melee Attack Roll: +15, reach 15 ft. Hit: 17 (2d8 + 8) Slashing damage plus 10 (3d6) Poison damage.
Poison Breath (Recharge 5–6). Constitution Saving Throw: DC 22, each creature in a 90-foot Cone. Failure: 77 (22d6) Poison 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): At Will: Detect Magic, Mind Spike (level 5 version) 1/Day Each: Geas, Modify Memory

Mind Invasion. The dragon uses Spellcasting to cast Mind Spike (level 5 version).
Noxious Miasma. Constitution Saving Throw: DC 21, each creature in a 30-foot-radius Sphere centered on a point the dragon can see within 90 feet. Failure: 17 (5d6) Poison damage, and the target takes a -2 penalty to AC 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.
Pounce. The dragon moves up to half its Speed, and it makes one Rend attack.