Ancient Green Dragon
CR 22 Gargantuan dragon with 402 HP and AC 21. Multiattack grants three Rend strikes (+15, reach 15 ft., 2d8+8 slashing plus 3d6 poison each), or one strike swapped for spellcastin...
Ancient Green Dragon. Gargantuan dragon, lawful evil.
Languages: Common, Draconic
Traits: Amphibious; Legendary Resistance (4/Day, or 5/Day in Lair)
Gargantuan dragon · lawful evil
AC 21 · HP 402 · Speed 40 ft., fly 80 ft., swim 40 ft., climb 20 ft. · Initiative +15
| STR | DEX | CON | INT | WIS | CHA | |
|---|---|---|---|---|---|---|
| Score | 27 | 12 | 25 | 20 | 17 | 22 |
| Mod | +8 | +1 | +7 | +5 | +3 | +6 |
| Save | +8 | +8 | +7 | +5 | +10 | +6 |
Skills Deception +13, Perception +17, Persuasion +13, Stealth +8 · Senses blindsight 60 ft., darkvision 120 ft., passive Perception 27 · Challenge 22 (PB +7)
Immunities Poison · Condition Immunities Poisoned
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
Multiattack. The dragon makes three Rend attacks. It can replace one attack with a use of Spellcasting to cast Mind Spike (level 5 version).
Poison Breath. Constitution Saving Throw: DC 22, each creature in a 90-foot Cone. Failure: 77 (22d6) Poison damage. Success: Half damage.
Rend. Melee Attack Roll: +15, reach 15 ft. 17 (2d8 + 8) Slashing damage plus 10 (3d6) Poison 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 - **1/Day Each:** Geas, Modify Memory