Clone Shell

Imprint usually banks a card to copy, modify, or replay; this Shapeshifter banks one to ambush with. The two triggers split across a life cycle: the enters-trigger buries a chosen card from the top four face down, and only death turns it face up, dropping a creature card straight onto the battlefield. That structure makes the body a delivery vehicle rather than a threat. A 2/2 is built to die, and dying is precisely when the payload arrives, so combat math gets quietly rewritten: trading down into the Shell is the worst block your opponent can make, because the creature you wanted is waiting underneath. The selection from four cards lets you aim the hidden creature with some precision, while the face-down clause keeps the target secret until it resolves, denying information that would otherwise let an opponent play around it. There is a cost the rate hides: the chosen card is exiled face down regardless, so a noncreature pick is simply gone, and a removal spell that exiles the Shell instead of killing it nullifies the whole plan. The design lives entirely in the seam between entering and dying, turning what reads as a fragile artifact body into a question every attacker and removal spell has to answer.