Scavenger Zorio

Player
Whenever you sacrifice a creature, you may either have target creature in your graveyad gain scavenge {x}{b}{g} until end of turn, where X is that creature's power minus 1, or deal 1 damage to target player and you gain life.
Mana Pool - {b} or {g} (During your untap step add {b} or {g} to your mana pool, this mana doesn't empty
as steps, phases, and turns end.)