Tempered Steel

This is an aggressive artifact deck that looks to leverage cards like Tempered Steel and Steel Overseer to close games out quickly.

UW Steel 

Creatures (3)
3
Whirler Rogue
Spells (4)
4
Servo Exhibition
Artifacts (26)
4
Stonecoil Serpent
2
Court Homunculus
4
Esper Sentinel
4
Gingerbrute
4
Steel Overseer
4
Vault Skirge
4
Nettlecyst
Enchantments (4)
4
Tempered Steel
Lands (23)
4
Blinkmoth Nexus
4
Hallowed Fountain
4
Hengegate Pathway
3
Island
2
Plains
2
Shefet Dunes
4
Spire of Industry
Cards (60)
Sideboard (13)
3
Miscast
2
Aether Gust
3
Declaration in Stone
2
Negate
2
Archon of Emeria
1
Karn, Scion of Urza