Мимик
Mimics are magically-created creatures with a hard rock-like outer shell that protects their soft inner organs. Mimics can alter their form and their pigmentation; they use this talent to lure victims into close range, where they attempt to feed on them. They usually appear in the form of treasure chests. There are two varieties, the smaller, more intelligent common mimic, and the larger, less intelligent killer mimic.
Mimics are large. Common mimics occupy about 150 cubic feet (a 3' x 6' x 8' chest, or a large door frame). Killer mimics occupy about 200 cubic feet. Mimics' natural color is a speckled grey that resembles granite. Mimics can alter their pigmentation to resemble varieties of stone (such as marble), wood grain, and various metals (gold, silver, copper); it takes one round to make the desired alteration. They cannot lose mass in this transformation (they must remain the same size, though they may radically alter their dimensions).
Common mimics have their own tongue (corruptions of the original language spoken by their wizard creators) and can also be taught to speak in common and other languages. Killer mimics are incapable of speech.