Creatures your opponents control get -1/-1 until end of turn. Remove Festering March from the game with three time counters on it. Suspend 3 - {2}{B} (Rather than play this card from your hand, you may pay {2}{B} and remove it from the game with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, play it without paying its mana cost.)