Phyrexian Delver 
Creature — Phyrexian Zombie
When this creature enters, return target creature card from your graveyard to the battlefield. You lose life equal to that card's mana value.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL