A-Meria's Outrider 
Creature — Elf Archer
Reach Domain — When Meria's Outrider enters, it deals damage equal to the number of basic land types among lands you control to any target.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL