Young Void Dragon

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

As ancient void dragon.

The dragon makes three attacks: one with its bite and two with its claws.

Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 16 (2d10 + 5) piercing damage plus 3 (1d6) cold damage.

Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) slashing damage.

The dragon uses one of the following breath weapons:

D5

The dragon exhales a 30-foot cube of powerful localized gravity, originating from the dragon.

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, it must make a DC 17 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.

The dragon exhales star fire in a 30-foot cone. Each creature in that area must make a DC 17 Dexterity saving throw, taking 28 (8d6) fire damage and 28 (8d6) radiant damage on a failed save, or half as much damage on a successful one.

When the dragon is hit by a ranged attack it can create a small rift in space to increase its AC by 4 against that attack. If the attack misses because of this increase the dragon can choose a creature within 30 feet to become the new target for that attack. Use the original attack roll to determine if the attack hits the new target.