Claw

Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) slashing damage.

Great Sword or Maul

Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 9 (2d6 + 2) slashing or bludgeoning damage.

Mushroom-Poisoned Javelin

Ranged Weapon Attack: +4 to hit, range 30 ft., one target. Hit: 5 (1d6 + 2) piercing damage plus 6 (1d12) poison damage and the target is poisoned until the start of the moss lurker's next turn. A successful DC 11 Constitution save halves the poison damage and prevents poisoning.

Dropped Boulder

Ranged Weapon Attack: +4 to hit, range 100 ft. (vertically), one target. Hit: 10 (3d6) bludgeoning damage.