Gaping Cave

When you cast this spell, play it face down.
{1}: Exile target attacking creature and Gaping Cave. Place 3 time counters on the target card and 10 Time counters on Gaping Cave. Remove 1 time counter at the beginning of your Upkeep, then if there are no Time Counters on the cards, return the exiled card to the battlefield under your control.
Come in deep, and pull out rejuvenated.