Multiattack

The astral devourer makes two melee attacks.

Hungering Serpents

Melee Weapon Attack: +7 to hit, reach 0 ft., one target in the swarm's space. Hit: 8 (2d8) piercing damage, or 4 (1d8) piercing damage if the swarm has half of its hit points or fewer, plus 14 (4d6) poison damage.

Serpent Spray (Recharge 6)

The astral devourer flings biting astral serpents outward. Each creature within 20 feet of the astral devourer must make a DC 16 Dexterity saving throw, taking 14 (4d6) piercing damage and 14 (4d6) poison damage on a failed save, or half as much damage on a successful one. The astral devourer regains hp equal to the single highest amount of piercing damage dealt by this spray.