Caustify

Play this card any time you could play a sorcery.
Target player with two or more creatures skips
his or her next turn. Then, if that same player
does not choose to lose 10 Life and sacrifice a
creature his or her following turn after that is
skipped as well. Place this card on the bottom of
your library.
"Ah, the poison of sweet flesh, freshly collondrified."
—Stalix