Zygon Infiltrator

Cloning has always paid its power cost up front: you get a copy the instant the effect resolves, and you keep it forever. Body-print rewrites that contract. The copy here is rented rather than owned, tethered to a stun counter you plant on the target when you activate. You become that creature only while it stays down, and the stun counter is what keeps it down: it eats the target's next untap step instead of standing it up. So the mechanic bundles two effects that usually cost separate cards, a soft removal (a creature that can't untap can't block or attack) and a temporary Vesuvan Doppelganger, into one sorcery-speed activation you can fire again and again. That repeatability is the wrinkle. Most copy effects are one-and-done; this is a recurring toolbox, letting you become the best thing on the board this turn and something else next turn as the battlefield shifts, provided you keep the original tapped so the copy holds and can reactivate Body-print once you've reverted. The printed 3/2 is chassis, not payload: stats you expect to overwrite the moment the ability matters. What makes the card sing is the same thing that makes it fiddly. You never control when the target's controller reclaims it, only that they lose an untap step now; your copy dissolves the instant they claw the original upright, so the whole engine runs on friction you can create but not indefinitely maintain.