18 Mountain
3 Goblin Arsonist
4 Goblin Fireslinger
4 Goblin Grenade
4 Hellspark Elemental
2 Keldon Marauders
4 Lava Spike
4 Lightning Bolt
4 Magma Jet
3 Rift Bolt
2 Searing Blaze
4 Shock
4 Spark Elemental
Sideboard:
2 Act of Treason
4 Arc Trail
3 Into the Core
1 Lightning Strike