Ancient White Dragon — D&D 5e Stat Block
Complete stat block for Ancient White Dragon, a CR 20 gargantuan dragon from D&D 5th Edition.
Ancient White Dragon
Gargantuan Dragon, Chaotic Evil
Armor Class 20 (natural armor)
Hit Points 333 (18d20+144)
Speed 40 ft., burrow 40 ft., fly 80 ft., swim 40 ft.
Skills Perception +13, Stealth +6
Damage Immunities cold
Senses Blindsight 60 ft., Darkvision 120 ft., passive Perception 23
Languages Common, Draconic
Challenge 20 (25,000 XP)
Ice Walk. The dragon can move across and climb icy surfaces without needing to make an ability check.
Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead.
Actions
Multiattack. The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.
Bite. Melee Weapon Attack: +14 to hit, reach 15 ft., one target. Hit: 19 (2d10 + 8) piercing damage plus 9 (2d8) cold damage.
Claw. Melee Weapon Attack: +14 to hit, reach 10 ft., one target. Hit: 15 (2d6 + 8) slashing damage.
Cold Breath (Recharge 5-6). The dragon exhales an icy blast in a 90-foot cone. Each creature in that area must make a DC 22 Constitution saving throw, taking 72 (16d8) cold damage on a failed save, or half as much on a successful one.
Legendary Actions
The ancient white dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The ancient white dragon regains spent legendary actions at the start of its turn.
Detect. The dragon makes a Wisdom (Perception) check.
Tail Attack. The dragon makes a tail attack.
Wing Attack (Costs 2 Actions). The dragon beats its wings. Each creature within 15 feet must succeed on a DC 22 Dexterity saving throw or take 15 (2d6 + 8) bludgeoning damage and be knocked prone.