Built to Smash 
Instant
Target attacking creature gets +3/+3 until end of turn. If it's an artifact creature, it gains trample until end of turn.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Target attacking creature gets +3/+3 until end of turn. If it's an artifact creature, it gains trample until end of turn.