Mercadia's Downfall 
Instant
Each attacking creature gets +1/+0 until end of turn for each nonbasic land defending player controls.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Each attacking creature gets +1/+0 until end of turn for each nonbasic land defending player controls.