Cryovain, Vessel of Tiraeth

Legendary Resistance (3/Day)

If Cryovain fails a saving throw, it can choose to succeed instead.

Tiraeth’s Hunger

The first time each turn Cryovain deals damage to a creature, it deals an extra 7 (2d6) necrotic damage.

Unnatural Flight

Cryovain can hover. Its movement does not provoke opportunity attacks from creatures that are frightened or restrained.

Cryovain makes three attacks: one with its Bite and two with its Claws.

Bite

Melee Weapon Attack: +10 to hit, reach 10 ft., one target.
Hit: 19 (2d10 + 6) piercing plus 7 (2d6) necrotic.

Claw

Melee Weapon Attack: +10 to hit, reach 5 ft., one target.
Hit: 13 (2d6 + 6) slashing.

Tail

Melee Weapon Attack: +10 to hit, reach 15 ft., one target.
Hit: 15 (2d8 + 6) bludgeoning, and the target must succeed on a DC 16 Strength save or be knocked prone.

Breath Weapon: Gravefrost Exhalation (Recharge 5–6)

Cryovain inhales for one round and then exhales black-blue frost in a 60-foot cone.
Each creature in that area must make a DC 16 Constitution saving throw.

• Fail: 45 (10d8) cold damage + 18 (4d8) necrotic damage, and the creature’s speed is reduced by 10 feet until the end of its next turn.

• Success: Half damage, no speed reduction

Rift-Scream (Recharge 6)

Cryovain releases a psychic shriek. Each enemy within 30 feet must make a DC 16 Wisdom save.

• Fail: 18 (4d8) psychic damage and the creature's speed is reduced by half until the end of its next turn.

• Success: Half damage, no reduction

Shadow-Drag

One creature Cryovain can see within 60 feet must succeed on a DC 16 Strength save or be pulled up to 20 feet in a straight line toward Cryovain.

If the creature ends adjacent to Cryovain, it takes 7 (2d6) necrotic damage.

Void-Wing Rebuff

When a creature hits Cryovain with a melee attack, Cryovain beats its wings.
The attacker must succeed on a DC 16 Dexterity save or take 10 (3d6) cold damage and be pushed 10 feet away.

Cryovain can take 3 legendary actions, only one at a time, at the end of another creature’s turn.

Detect. Cryovain makes a Wisdom (Perception) check.
Tail Attack. Cryovain makes one Tail attack.
Wing Attack (Costs 2 Actions). Cryovain beats its wings. Each creature within 15 feet must make a DC 16 Dex save or take 13 (2d6 + 6) bludgeoning and be knocked prone. Cryovain can then fly up to 40 feet.