3 Goblin Welder
1 Breya's Apprentice
4 Mountain
1 Great Furnace
2 Scalding Tarn
1 Wooded Foothills
1 Arid Mesa
2 Plateau
4 Ancient Tomb
4 Urza's Saga
2 City of Traitors
1 Mox Opal
2 Lotus Petal
1 Simian Spirit Guide
4 Painter's Servant
3 Goblin Engineer
3 Imperial Recruiter
4 Pyroblast
2 Red Elemental Blast
2 Lightning Bolt
1 Soul-Guide Lantern
1 Ensnaring Bridge
2 Enlightened Tutor
3 Grindstone
3 Karn, the Great Creator
1 Ichor Wellspring
1 Goblin Cratermaker
1 Ethersworn Canonist
Sideboard
1 Red Elemental Blast
2 Lightning Bolt
1 Ensnaring Bridge
1 Grindstone
1 Ethersworn Canonist
2 Surgical Extraction
1 Faerie Macabre
1 Abrade
1 Blood Moon
1 Tormod's Crypt
1 Pithing Needle
1 Portable Hole
1 Liquimetal Coating