based on D&D 5th Edition
Ancient Green Dragon
Gargantuan  Dragon , Lawful Evil

Armor Class 21  (natural)
Hit Points 385  (22d20+154)
Speed 40 ft. , fly 80 ft. , swim 40 ft.



STR DEX CON INT WIS CHA
27  (+8) 12  (+1) 25  (+7) 20  (+5) 17  (+3) 19  (+4)
Saving Throws Dex +8, Con +14, Wis +10, Cha +11
Damage Immunities Poison
Condition Immunities Poisoned
Senses blindsight,darkvision, passive Perception 27
Languages Common, Draconic
Challenge 22  (0 XP)
Legendary Resistance. (3/day) automatic succeed on save after failure.
Actions
Multiattack. Uses Frightful Presence, then makes one bite and two claw attacks.
Bite. Melee Weapon Attack: +15 to hit, reach 15 ft., one target. Hit: 19 (2d10 +8) piercing damage.
Bite+. plus 10 (3d6) poison damage.
Claw. Melee Weapon Attack: +15 to hit, reach 10 ft., one target. Hit: 15 (2d6+8) slashing damage.
Tail. Melee Weapon Attack: +15 to hit, reach 20 ft., one target. Hit: 17 (2d8 +8) bludgeoning damage.
Poison Breath. (Recharge 5-6) DC 22 Constitution saving throw, half damage on successful save, for 77 (22d6) poison damage in 90 ft. Cone
Frightful Presence. DC 19 Wisdom saving throw, frightened. Save at end of each turn, successful save creature becomes immune. in 120 Area
Wing Attack. DC 23 dexterity saving throw or take damage and knocked prone., for 15 (2d6+8) bludgeoning damage in ft. Melee