Gargantuan Dragon, Chaotic Evil
Armor Class 22
Hit Points 460 (40d12 + 200)
Speed 35 ft., Fly 80 ft.
STR
30 (+10)
DEX
10 (+0)
CON
29 (+9)
INT
12 (+1)
WIS
15 (+2)
CHA
18 (+4)
Saving Throws DEX +6, CON +15, WIS +8, CHA +10
Damage Vulnerabilities Bludgeoning, Piercing, and Slashing by Silvered Weapons
Damage Resistances Bludgeoning and Piercing from nonmagical attacks
Damage Immunities Cold
Condition Immunities Charmed, Exhaustion, Frightened, Grappled, Petrified
Senses Darkvision, Passive Perception 12
Languages Common, Draconic
Challenge 20 (25,000 XP)
Proficiency Bonus +6
Traits

Ice Walk: Cryovain can move across and climb icy surfaces without needing to make an ability check. Additionally, difficult terrain composed of ice or snow doesn’t cost him extra movement.

Frightful Presence: Each creature of Cryovain’s choice within 120 feet and aware of him must succeed on a DC 19 Wisdom saving throw or become frightened for 1 minute. A frightened target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Actions

Multiattack: Cryovain makes three attacks: one with his bite and two with his claws.

  • Bite: Melee Weapon Attack: +16 to hit, reach 15 ft., one target.
    Hit: 23 (3d10 + 10) piercing damage plus 10 (3d6) cold damage.
  • Claw: Melee Weapon Attack: +16 to hit, reach 10 ft., one target.
    Hit: 19 (3d8 + 10) slashing damage.

Frost Breath (Recharge 5-6): Cryovain 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 damage on a successful one.

Reactions

Wing Attack (Costs 2 Actions): Cryovain beats his wings. Each creature within 10 feet of him must succeed on a DC 22 Dexterity saving throw or take 18 (3d6 + 10) bludgeoning damage and be knocked prone. Cryovain can then fly up to half his flying speed.

Legendary Actions

Cryovain can take 2 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. Cryovain regains spent legendary actions at the start of his turn.

  • Detect: Cryovain makes a Wisdom (Perception) check.
  • Tail Attack: Cryovain makes a tail attack.
Mythic Actions

Mythic Action Name. Enter the description for how mythic actions work for your monster here.

Mythic Action Name (Costs # Actions). Enter the description for your mythic action.

Description

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Lair and Lair Actions

On initiative count 20 (losing initiative ties), Cryovain can take a lair action to cause one of the following effects:

  1. Icicle Drop: Icicles fall from the ceiling in a 20-foot radius. All creatures must make a DC 16 Dexterity saving throw or take 10 (3d6) piercing damage.
  2. Frozen Ground: The ground in a 30-foot radius becomes slick with ice. Creatures must make a DC 16 Dexterity saving throw or fall prone.
  3. Howling Wind: A freezing wind howls through the lair. Each creature within 60 feet of Cryovain must succeed on a DC 18 Constitution saving throw or have their speed reduced by half for 1 minute.

Description of the Lair's Interior:

  • Vast Cavern: The cavern opens up to a massive, icy expanse. Giant icicles hang from the ceiling like frozen daggers, and columns of ice stretch from floor to ceiling, twisting like ancient tree trunks. The light from outside barely penetrates here, casting long shadows and giving the area a dim, blue glow.
  • Frozen Statues: Scattered throughout the cavern are humanoid figures, warriors and adventurers frozen solid in ice. Their faces are twisted in expressions of terror, their weapons uselessly clutched in their hands. Some are half-buried in snow, eternal monuments to those who challenged Cryovain and failed.
  • Dragon's Breath: A thin mist clings to the floor, swirling around the party’s feet. It carries with it a faint, sulfurous scent—evidence of the dragon's deadly frost breath. Occasionally, a deeper rumble reverberates through the ice, as if the entire mountain is alive and watching them.
  • Treasure Hoard: In the distance, they can glimpse the glint of gold, silver, and jewels—Cryovain’s hoard. But it is no ordinary pile of treasure; the valuables are encased in solid ice, frozen by the dragon’s power. Weapons, armor, and trinkets from fallen heroes can be seen glittering within.

Habitat: Mountain

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