Image promptgargantuan ancient green dragon, immense sinuous serpentine body, layered emerald and bruise-dark scales, towering horned neck-frill, malicious ancient eyes, rolling cloud of sickly green poison breath, threading between colossal rotted primeval-forest trunks, corrupted forest, coiling mist and dripping venom, patient predatory stare from canopy shadow, dark fantasy, grimdark, painterly digital art, dramatic chiaroscuro lighting, muted desaturated palette with corrupted-crimson accents, weathered post-Cataclysm atmosphere, intricate high detail, cinematic composition

Ancient Green Dragon

Gargantuan Dragon (Chromatic), Lawful Evil
CR 22ControllerUnderground
AC 21
Initiative +15 (25)
HP 402 (23d20 + 161)
Speed 40 ft., Fly 80 ft., Swim 40 ft.
STR
27
+8
save +8
DEX
12
+1
save +8
CON
25
+7
save +7
INT
20
+5
save +5
WIS
17
+3
save +10
CHA
22
+6
save +6
Skills Deception +13, Perception +17, Persuasion +13,
Immunities Poison; Poisoned
Senses Blindsight 60 ft., Darkvision 120 ft.;
Languages Common, Draconic

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).

Rend. Melee Attack Roll: Hit: +15, reach 15 ft. 17 (2d8

  • 8) Slashing damage plus 10 (3d6) Poison damage.

Poison Breath (Recharge 5–6). Constitution Saving Throw: Fail- DC 22, each creature in a 90-foot Cone. ure: Success: 77 (22d6) Poison damage. 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): Detect Magic Mind Spike At Will: , (level 5 version) Geas Modify Memory 1/Day Each: ,

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.

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 Failure: a point the dragon can see within 90 feet. 17 (5d6) Poison damage, and the target takes a −2 penalty Failure or Success: to AC until the end of its next turn. 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. Green Hag Green Hag