4 Great Furnace
12 Mountain
4 Chain Lightning
4 Lava Spike
4 Lightning Bolt
4 Mishra's Bauble
4 Monastery Swiftspear
4 Pia's Revolution
4 Pyrite Spellbomb
4 Risk Factor
4 Skewer the Critics
4 Urza's Bauble
4 Vexing Devil
Sideboard:
4 Ancient Den
4 Clifftop Retreat
4 Deflecting Palm
3 Dispatch
4 Lightning Helix