20 Mountain
4 Incinerate
4 Keldon Marauders
4 Krenko's Enforcer
4 Lava Spike
4 Lightning Bolt
4 Lightning Strike
4 Magma Jet
4 Mogg Fanatic
4 Seal of Fire
4 Sulfuric Vortex
Sideboard:
2 Hearthfire Hobgoblin