Tainted Remedy 
Enchantment
If an opponent would gain life, that player loses that much life instead.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Enchantment
If an opponent would gain life, that player loses that much life instead.