Nuke

Early detonation {u}{u}{b}{b} (you may cast this spell
for its early detonation cost. If you do, you lose 5 life
and deal 2 damage to each of your creatures)
You can only cast this spell before your attack
step.
Target opponent's life total becomes 1. You can't attack this turn. If they don't lose the game this
turn, you lose the game.