Multiattack

The dorreq makes one Bite attack and two Tentacles attacks.

Bite

Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) piercing damage.

Tentacles

Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 8 (1d8 + 4) bludgeoning damage, and if the target is a Medium or smaller creature, it is grappled (escape DC 14) and pulled up to 5 feet closer to the dorreq. Until this grapple ends, the target is restrained. The dorreq can grapple up to two creatures at a time.

Void Thrum (Recharge 5-6)

The dorreq emits a barely audible, vibrating thrum laced with Void energy. Each creature within 20 feet of the dorreq must make a DC 14 Constitution saving throw, taking 10 (3d6) thunder damage and 10 (3d6) necrotic damage on a failed save, or half as much damage on a successful one.