Radiant Essence 
Creature — Spirit
This creature gets +1/+2 as long as an opponent controls a black permanent.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL
Creature — Spirit
This creature gets +1/+2 as long as an opponent controls a black permanent.