The Holy Hand Grenade

{4}, {t}, Sacrifice The Holy Hand Grenade:
Choose a creature you control. Exile the rest.
When The Holy Hand Grenade is put into a graveyard from the battlefield, you may pay {1}{w}. If you do, search your library for a God
card, put it into your hand, then shuffle.
O Lord, bless this Thy hand grenade that, with it,
Thou mayest blow Thine enemies to tiny bits in Thy
mercy.