Otherworldly Form. The dragon does not need to eat, breath, or sleep.

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 7 (1d10 + 2) piercing damage plus 2 (1d4) necrotic damage.

Void Breath (Recharge 5–6). The dragon exhales purple and black necrotic energy in a 15-foot line that is 10 feet wide. Each creature in that area must make a DC 11 Dexterity saving throw. On a failed save, the creature takes 10 (3d8) necrotic damage or half as much on a successful one.  Creatures in the area must also make a DC 11 Intelligence saving throw or take 10 (3d8) psychic damage.

Spellcasting (Psionics). The dragon casts one of the following spells, requiring no spell components and using Intelligence as the spellcasting ability (spell save DC 12):

1/day each: color spray