Swolbold

Leaping Attack. If the swolbold uses the Dash action on its turn and stops within 5 feet of a creature, it can make one slam attack with disadvantage as a bonus action against that creature.

Pack Tactics. The swolbold has advantage on attack rolls against a creature if at least one of the swolbold's allies is within 5 feet of the creature and the ally isn't incapacitated.

Sunlight Sensitivity. While in sunlight, the swolbold has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.

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.