Pulse of the Fields 
Instant
You gain 4 life. Then if an opponent has more life than you, return Pulse of the Fields to its owner's hand.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
You gain 4 life. Then if an opponent has more life than you, return Pulse of the Fields to its owner's hand.