Phthisis (C13-085) - Commander 2013

Destroy target creature. Its controller loses life equal to its power plus its toughness.
Suspend 5—{1} (Rather than cast this card from your hand, you may pay {1} and exile it with five time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)