4 Great Furnace
16 Mountain
4 Faithless Looting
4 Goblin Welder
4 Myr Retriever
4 Pia's Revolution
4 Pyrite Spellbomb
4 Scrap Trawler
4 Shrapnel Blast
4 Tormenting Voice
4 Trash for Treasure
4 Urza's Bauble
Sideboard:
4 Workshop Assistant