Dexterity +8, Constitution +14, Wisdom +10, Charisma +11
Deception +11, Insight +10, Perception +17, Persuasion +11, Stealth +8
Blindsight 60 ft, Darkvision 120 ft
Common, Draconic
Poison
Poisoned
Traits
Amphibious
The Ancient Green Dragon can breathe air and water.
Legendary Resistance
If the Ancient Green Dragon fails a saving throw, it can choose to succeed instead.
Legendary Actions
Actions
Multiattack
The Ancient Green Dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.
Bite
+15 to hit, range 15 ft. Hit: 19 (2d10 + 8) piercing damage.
Claw
+15 to hit, range 10 ft. Hit: 22 (4d6 + 8) slashing damage.
Frightful Presence
Each creature of the Ancient Green Dragon's choice that is within of the dragon and aware of it must succeed on a saving throw or become frightened for . A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the Ancient Green Dragon's for the next 24 hours.
Tail
+15 to hit, range 15 ft. Hit: 17 (2d8 + 8) bludgeoning damage.
Poison Breath
The Ancient Green Dragon exhales poisonous gas in a . Each creature in that area must make a saving throw, taking damage on a failed save, or half as much damage on a successful one.
Legendary Actions
Detect
The Ancient Green Dragon makes a Wisdom (Perception) check.
Tail Attack
The Ancient Green Dragon makes a tail attack.
Wing Attack
The Ancient Green Dragon beats its wings. Each creature within of the Ancient Green Dragon must succeed on a saving throw or take damage and be knocked prone. The Ancient Green Dragon can then fly up to half its flying speed.