21 Mountain
4 Chain Lightning
2 Electrostatic Field
1 Fireblast
4 Flame Rift
4 Grim Lavamancer
2 Guttersnipe
4 Lava Spike
4 Lightning Bolt
1 Nevinyrral's Disk
4 Rift Bolt
4 Risk Factor
4 Skewer the Critics
1 Sulfuric Vortex
1 Thunderous Wrath
Sideboard:
4 Goblin Guide
4 Price of Progress