Face the Monstrous

Deed (You may exile this card from your graveyard
to add {w} to your mana pool. Play this only as a
sorcery.)
Target blocked creature gets -1/-1 until end
of turn. It doesn't untap during its controller's
next untap step.
Cattle die, friends die, and the same with you;
but I know of something that never dies
and that's a dead person's deeds.