Multiattack. The worm makes three attacks: two with its claws and one with its tail.

Claw. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 13 (2d6 + 6) slashing damage.

Tail. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 17 (2d10 + 6) bludgeoning damage plus 9 (2d8) poison damage.

Vile Vomit (Recharge 5-6). The worm exhales a spray of bile in a 30 ft. cone. Each creature in that area must make a DC 17 Dexterity saving throw, taking 35 (10d6) acid damage on a failed save, and must make an additional DC 15 Constitution saving throw or take an additional 28 (8d6) and be injected with metamorphite. On a successful save the creature takes half as much damage and does not have to make an additional Constitution saving throw.