Mimic

The mimic adheres to anything that touches it. A Huge or smaller creature adhered to the mimic has the Grappled condition (escape DC 13). Ability checks made to escape this grapple have Disadvantage.

Melee Attack Roll: +5 to hit (with Advantage if the target is Grappled by the mimic), reach 5 ft. Hit: 7 (1d8 + 3) piercing damage—or 12 (2d8 + 3) piercing plus 2 (1d4) acid damage if the target is Grappled by the mimic.

Melee Weapon Attack: +5 to hit, reach 30 ft.. Hit: 7 (1d8 + 3) bludgeoning plus 2 (1d4) acid damage. If the target is a Large or smaller creature, it has the Grappled condition (escape DC 13). Ability checks made to escape this grapple have Disadvantage.

The mimic shape-shifts to resemble a Medium or Small object while retaining its game statistics, or it returns to its true blob form. Any equipment it is wearing or carrying isn't transformed.