Slam

Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) bludgeoning damage. If the target is a Large or smaller creature, it is grappled (escape DC 14). Until the grapple ends, the target is restrained and the swolbold can't make slam attacks against other targets.

Crush

One creature grappled by the swolbold must make a DC 14 Strength saving throw, taking 21 (5d6 + 4) bludgeoning damage on a failed save, or half as much damage on a successful one.