Chromeshell Crab

(You may cast this card face down as a 2/2 creature for 3. Turn it face up any time for its morph cost.)When this creature is turned face up, you may exchange control of target creature you control and target creature an opponent controls.

was spent to cast it.
: Put this creature and each creature it's blocking on top of their owners' libraries, then those players shuffle.
equal to that spell's mana value. (Each clashing player reveals the top card of their library, then puts that card on their choice of the top or bottom. A player wins if their card had a greater mana value.)





