Ertai's Meddling PLST TMP-61 · rare

Ertai's Meddling · {X}{U} · Instant · X can't be 0. Target spell's controller exiles it with X delay counters on it. At the beginning of each of that player's upkeeps, if that card is exiled, remove a delay counter from it. If the card has no delay counters on it, the player puts it onto the stack as a copy of the original spell.