Epochrasite

A creature that refuses to stay dead, and refuses to stay small. The design hinges on a single recursive loop: cast it from hand and you get a 1/1, but it dies, suspends itself, and returns later as a 4/4 with haste (because anything cast off suspend was not cast from your hand). Die again and the loop restarts at three time counters, so the same body keeps grinding back, always bigger than the 1/1 you first cast. That self-replacing quality is what makes it a structural piece rather than a beater: it is a renewable threat that costs nothing but time once it is online, and time is the resource it manufactures for free. The clean trick is that the "didn't cast it from hand" clause does double duty. It rewards the suspend return, but it also turns any blink, reanimation, or token-copy of the card into an instant 4/4, since none of those routes count as casting from hand. The result is a construct that wants to be sacrificed, blinked, and recurred rather than simply attacked with, and one that punishes removal by handing the controller a strictly better creature a few turns down the line. The body is tiny; the engine around it is the point.