Melee Weapon Attack: +19 to hit, reach 40 ft., one target. Hit: 21 (2d10 + 10) bludgeoning damage. If the target is a creature, it is grappled (escape DC 29). Until this grapple ends, the target is restrained. Cthulhu has four tentacles with which to grapple targets; while a tentacle is being used to grapple, it cannot be used to attack a different target.