Apex Mimic

Shapechanger. The mimic can use its action to polymorph into an object or back into its true, amorphous form. Its statistics are the same in each form. Any equipment it is wearing or carrying isn't transformed. It reverts to its true form if it dies.

Absorber. A grappled creature is absorbed, equipment and all, if it has 100 Hit Points or less. Such a creature is unable to be revived or reincarnated by any magical means. The mimic can only absorb three creatures per day. The mimic regains an amount Hit Points equal to the absorbed creatures' maximum Hit Points, when such a creature is absorbed on that turn.

False Appearance (Object Form Only). While the mimic remains motionless, it is indistinguishable from an ordinary object.

Grappler. The mimic has advantage on attack rolls against any creature grappled by it.

Pseudopod. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 62 (10d8 + 3) bludgeoning damage. If the mimic is in object form, the target is subjected to its Adhesive trait.

Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 24 (5d8 + 3) piercing damage plus 30 (5d8) acid damage.