Pollution Behemoth

Spells your opponents cast cost {p/c} more to cast. ({p/c} can be paid with {1} or 2 life.)
Contaminate - Whenever a player pays life
to cast a spell or activate an ability, you may sacrifice a creature with a -1/-1 counter on it or pay 1 life and put a -1/-1 counter on target creature you control. If you do, draw a card.