U/R Colossus
Featured by twistling (5-0) on 2017-06-26 (Standard)

Maindeck:

Artifacts
3 Aethersphere Harvester (Not currently legal in Standard)
1 Cultivator's Caravan (Not currently legal in Standard)
4 Key to the City (Not currently legal in Standard)
2 Metalspinner's Puzzleknot (Not currently legal in Standard)
1 Pacification Array (Not currently legal in Standard)
4 Prophetic Prism (Not currently legal in Standard)
4 Servo Schematic (Not currently legal in Standard)

Artifact Creatures
4 Metalwork Colossus (Not currently legal in Standard)

Creatures
1 Elder Deep-Fiend (Not currently legal in Standard)
4 Maverick Thopterist (Not currently legal in Standard)
3 Ravenous Intruder (Not currently legal in Standard)

Instants
3 Fling (Not currently legal in Standard)
2 Harnessed Lightning (Not currently legal in Standard)

Legendary Artifacts
2 Skysovereign, Consul Flagship (Not currently legal in Standard)

Basic Lands
3 Mountain

Lands
4 Aether Hub (Not currently legal in Standard)
2 Hanweir Battlements (Not currently legal in Standard)
2 Highland Lake (Not currently legal in Standard)
3 Sanctum of Ugin (Not currently legal in Standard)
4 Spire of Industry (Not currently legal in Standard)
4 Spirebluff Canal (Not currently legal in Standard)

Sideboard:
1 Scrap Trawler (Not currently legal in Standard)
4 Scrapheap Scrounger (Not currently legal in Standard)
2 Bastion Inventor (Not currently legal in Standard)
2 Dispel (Not currently legal in Standard)
1 Negate
2 Unlicensed Disintegration (Not currently legal in Standard)
3 Sweltering Suns (Not currently legal in Standard)