I'm playing a VERY old build of Welder MUD:

4 Wasteland
4 City of Traitors
4 Cavern of Souls
4 Ancient Tomb
4 Great Furnace

4 Goblin Welder
4 Kuldotha Forgemaster
4 Lodestone Golem
4 Metalworker
3 Wurmcoil Engine
1 Platinum Emperion
1 Blightsteel Colossus

4 Chalice of the Void
4 Grim Monolith
2 Mox Opal
2 Mox Diamond
2 Lightning Greaves
2 Voltaic Key
1 Spine of Ish Sah
1 Crucible of Worlds
1 Staff of Domination

It played like a well oiled machine, I just drew my 7 cards, assessed wether or not the hand did anything, if it didn't I took a mulligan, if it did I would have my game plan.

A lot of hasty Blightsteels tutored up with Forgemaster, Metalworker + Staff, Lodestone // Wurmcoil beatdown, and for once I got to Slaver lock someone with Welder.