Ertai's Meddling
35c7e7fa-1493-4ef8-9cdb-b02b07a1ad85
$1.00 CND
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, he or she puts it onto the stack as a copy of the original spell.