20 Mountain
4 Chain Lightning
4 Fireblast
4 Flame Rift
4 Goblin Guide
4 Hellspark Elemental
4 Keldon Marauders
4 Lava Spike
4 Lightning Bolt
4 Price of Progress
4 Rift Bolt
Sideboard:
2 Phyrexian Metamorph
2 Skullcrack
4 Smash to Smithereens
4 Sulfuric Vortex
3 Volcanic Fallout