Ancient Green DragonCR 22 · Gargantuan Dragon · Stat Block & Encounter Builder

Gargantuan dragon, Challenge 22. AC 21, 385 hit points.

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Armour Class

Hit Points

385

Speed

40 ft.

Challenge

22 · 41,000 XP

Alignment

Lawful Evil

The card

Stat Block

Gargantuan Dragon · Lawful Evil

Ancient Green Dragon

385

22d20 + 154 · 40 ft., fly 80 ft., swim 40 ft. · AC from natural armor

Blindsight 60 ft., Darkvision 120 ft., passive Perception 27

Languages: Common, Draconic

STR	DEX	CON	INT	WIS	CHA
27 (+8)	12 (+1)	25 (+7)	20 (+5)	17 (+3)	19 (+4)

Traits

Damage ImmunitiesPoison

Condition ImmunitiesPoisoned

AmphibiousThe dragon can breathe air and water.

Legendary ResistanceIf the dragon fails a saving throw, it can choose to succeed instead.

Actions

MultiattackThe dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.

BiteMelee Weapon Attack: +15 to hit, reach 15 ft., one target. Hit: 19 (2d10 + 8) piercing damage plus 10 (3d6) poison damage.

ClawMelee Weapon Attack: +15 to hit, reach 10 ft., one target. Hit: 22 (4d6 + 8) slashing damage.

TailMelee Weapon Attack: +15 to hit, reach 20 ft., one target. Hit: 17 (2d8 + 8) bludgeoning damage.

Frightful PresenceEach creature of the dragon's choice that is within 120 feet of the dragon and aware of it must succeed on a DC 19 Wisdom saving throw or become frightened for 1 minute. 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 dragon's Frightful Presence for the next 24 hours.

Poison BreathThe dragon exhales poisonous gas in a 90-foot cone. Each creature in that area must make a DC 22 Constitution saving throw, taking 77 (22d6) poison damage on a failed save, or half as much damage on a successful one.

How to actually run it

Tactics

The stat block tells you what it can do. This tells you what to do with it.

1Multiattack: The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.

2Legendary Resistance means it can auto-pass failed saves a few times a day. Expect your first control spells to be shrugged off — plan around it.

3It is a legendary creature with 3 legendary actions between turns; fight it in its lair and it is far more dangerous than the stat block alone.

Pitch the fight

Encounter Difficulty

Encounter Builder

How bad is this fight?

Real DMG maths — XP thresholds by level, and the group multiplier that makes crowds so much worse than the raw total suggests.

Ancient Green Dragons4Party size4Party level3

Could kill someone — and at high enough numbers, the whole party.

Difficulty

Deadly

328,000 adj. XP · ×2

deadly at 1,600

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Counsel

Ancient Green Dragon, Answered

What is Ancient Green Dragon's challenge rating in D&D 5e?

Ancient Green Dragon is Challenge 22, worth 41,000 XP. Encounter maths multiplies XP by the number of monsters, so a group is deadlier than the raw total — use the calculator on this page.

What are Ancient Green Dragon's stats?

AC 21 (natural armor), 385 hit points (22d20 + 154), speed 40 ft., fly 80 ft., swim 40 ft.. Ability scores: STR 27, DEX 12, CON 25, INT 20, WIS 17, CHA 19.

What is Ancient Green Dragon resistant to?

Ancient Green Dragon is immune to poison damage. Pick a damage type it does not shrug off.

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