Devouring Greed 
Sorcery — Arcane
As an additional cost to cast this spell, you may sacrifice any number of Spirits. Target player loses 2 life plus 2 life for each Spirit sacrificed this way. You gain that much life.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL