Rush of Blood 
Instant
Target creature gets +X/+0 until end of turn, where X is its power.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Target creature gets +X/+0 until end of turn, where X is its power.