4 Ancient Den
4 Darksteel Citadel
4 Great Furnace
2 Island
4 Seat of the Synod
4 Arcbound Crusher
4 Arcbound Stinger
4 Arcbound Worker
4 Dispatch
4 Galvanic Blast
4 Spincrusher
4 Steel Overseer
2 Temporal Mastery
4 Tezzeret's Gambit
4 Thoughtcast
4 Thrummingbird
Sideboard:
4 Echoing Truth
4 Steady Progress