Shamanic Death

Turn target face up creature card in exile or on the battlefield face down.(If on the battlefield and single-sided, it becomes a colorless 2/2 creature. Otherwise, transform it.)
Withhold - As long as you own seven or more cards in exile, if the target is a creature on the battlefield it also gets -2/-2 until end of turn.
"Out with the bad air and in with th...on second thought, you may need to keep some of that bad air."