Molten Man, Inferno Incarnate 
Legendary Creature — Elemental Villain
When Molten Man enters, search your library for a basic Mountain card, put it onto the battlefield tapped, then shuffle. Molten Man gets +1/+1 for each Mountain you control. When Molten Man leaves the battlefield, sacrifice a land.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL