Metalworker
A Legacy deck, by Chris Cornwell-Shiel
4th place at a tournament in Washington, District of Columbia, United States on 2017-10-29

Maindeck:

Artifacts
4 Chalice of the Void
4 Grim Monolith
1 Lightning Greaves
3 Mox Diamond
1 Spine of Ish Sah
1 Staff of Domination
1 Staff of Nin
3 Trinisphere

Artifact Creatures
1 Blightsteel Colossus
4 Kuldotha Forgemaster
4 Lodestone Golem
4 Metalworker
1 Steel Hellkite
2 Walking Ballista
1 Wurmcoil Engine

Legendary Planeswalkers
2 Ugin, the Spirit Dragon

Sorceries
1 Sweltering Suns

Artifact Lands
3 Darksteel Citadel

Lands
4 Ancient Tomb
4 Cavern of Souls
4 City of Traitors
3 Mishra's Factory
4 Wasteland

Sideboard:
1 Ensnaring Bridge
3 Relic of Progenitus
1 Sphere of Resistance
2 Tormod's Crypt
1 Trinisphere
1 Duplicant
3 Phyrexian Revoker
1 Razormane Masticore
1 Walking Ballista
1 Wurmcoil Engine