Eternal Taskmaster 
Creature — Zombie
This creature enters tapped.
Whenever this creature attacks, you may pay 
. If you do, return target creature card from your graveyard to your hand.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL