Dreamspoiler Witches 
Creature — Faerie Wizard
Flying Whenever you cast a spell during an opponent's turn, you may have target creature get -1/-1 until end of turn.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL