Adult Void Dragon

Huge dragon, Chaotic Neutral

Armor Class

19 (natural armor)

Hit Points

229 (17d12+119)

Speed

walk 40 ft., fly 80 ft. (hover)

Saves

Dex +5, Con +12, Wis +6, Cha +10

Skills

Arcana +13, History +13, Perception +11, Persuasion +10, Stealth +5

Damage Immunities

cold

Condition Immunities

charmed, frightened

Languages

Common, Draconic, Void Speech

Challenge

14

Chill of the Void

Cold damage dealt by the void dragon ignores resistance to cold damage, but not cold immunity.

Legendary Resistance (3/Day)

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

Void Dweller

As ancient void dragon.

Actions

Multiattack

The dragon can use its Aura of Madness. It then makes three attacks: one with its bite and two with its claws.

Bite

Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 18 (2d10 + 7) piercing damage plus 7 (2d6) cold damage.

Claw

Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 14 (2d6 + 7) slashing damage plus 3 (1d6) cold damage.

Tail

Melee Weapon Attack: +12 to hit, reach 15 ft., one target. Hit: 16 (2d8 + 7) bludgeoning damage.

Aura of Madness

As ancient void dragon, with DC 18 Wisdom saving throw.

Breath Weapons (Recharge 5-6)

The dragon uses one of the following breath weapons:

Gravitic Breath

The dragon exhales a 60-foot cube of powerful localized gravity, originating from the dragon. Falling damage in the area increases to 1d10 per 10 feet fallen. When a creature starts its turn within the area or enters it for the first time in a turn, including when the dragon creates the field, must make a DC 20 Dexterity saving throw. On a failure the creature is restrained. On a success the creature's speed is halved as long as it remains in the field. A restrained creature repeats the saving throw at the end of its turn. The field persists until the dragon's breath recharges, and it can't use gravitic breath twice consecutively.

Stellar Flare Breath

The dragon exhales star fire in a 60- foot cone. Each creature in that area must make a DC 20 Dexterity saving throw, taking 31 (9d6) fire damage and 31 (9d6) radiant damage on a failed save, or half as much damage on a successful one.

Teleport

The dragon magically teleports to any open space within 100 feet.

Legendary actions

The 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 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.

Void Slip (Costs 2 Actions)

The dragon twists the fabric of space. Each creature within 15 feet of the dragon must succeed on a DC 18 Dexterity saving throw or take 12 (2d6 + 5) bludgeoning damage and be knocked prone. The dragon can then teleport to an unoccupied space within 40 feet.

Void Cache (Costs 3 Actions)

The dragon can magically reach into its treasure hoard and retrieve one item. If it is holding an item, it can use this ability to deposit the item into its hoard.