Siege Crawler

Trample, indestructible
Whenever this creature deals combat damage to a player, that player loses the game.
Suspend 5—{1}{r}{r} (Rather than cast this card from your hand, you may pay {1}{r}{r} and exile it with five time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost. It has haste.)