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 

Planeswalkers (1)
1
Karn, Scion of Urza
Creatures (8)
4
Skilled Animator
4
Whirler Rogue
Spells (4)
4
Servo Exhibition
Artifacts (20)
4
Stonecoil Serpent
4
Court Homunculus
4
Gingerbrute
4
Steel Overseer
4
Vault Skirge
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 (15)
2
Reidane, God of the Worthy
3
Miscast
2
Aether Gust
3
Declaration in Stone
2
Negate
2
Archon of Emeria
1
Karn, Scion of Urza