Bane of Devigo

Whenever three or more nontoken creatures
are put into an opponent's graveyard from
anywhere this turn, you may pay {g}{g} rather
than pay Bane of Devigo's casting cost.
Exile all cards from target player's graveyard.
You gain 3 life for each creature exiled this way.
"Forcing those corpse defilers to watch the newly dead decompose is a sight to behold. Nothing can make them scream louder than their own inaction." ~Xiin-Clieva