Multiattack

Three Void Claw or Void Bolt attacks.

Void Claw

Melee Weapon Attack: +7 to hit, 5 ft., one target, 8 (1d8+4) slashing damage + 7 (2d6) necrotic. If target is creature other than Construct or Undead must make DC 15 Con save or take 3 (1d6) necrotic at start of each of its turns as wound burns with Void energy. Any creature can use action to purge energy from wound via DC 12 Int (Arcana) check. Energy also leaves the wound if target receives magical healing ending the effect.

Void Bolt

Ranged Spell Attack: +5 to hit, 120 ft., one target, 16 (4d6+2) necrotic.