A master of deception that can assume the shape of any object or creature
A master of deception, a Mimic can assume the general shape of any object or creature that fills roughly 150 cubic feet. A mimic's body is hard and has a rough texture, no matter what appearance it might present. Anyone who closely examines the mimic can easily detect the ruse. A mimic can speak Common. In combat a mimic will often surprise an unsuspecting adventurer by lashing out with a heavy pseudopod.
Basic Fantasy Field Guide Omnibus