Orim's Cure 
Instant
If you control a Plains, you may tap an untapped creature you control rather than pay this spell's mana cost. Prevent the next 4 damage that would be dealt to any target this turn.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL