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Affinity
A Modern deck, by Corbett Gray
1st place at a tournament in Portland, Oregon, United States on 2012-01-15
As reported at http://www.wizards.com/magic/magazine/events.aspx?x=mtg/daily/eventcoverage/barcelona12ptq/0114portland

Maindeck:

Artifacts
4 Cranial Plating
3 Springleaf Drum
2 Welding Jar

Artifact Creatures
4 Etched Champion
4 Memnite
4 Ornithopter
4 Signal Pest
3 Steel Overseer
4 Vault Skirge

Instants
4 Galvanic Blast
3 Shrapnel Blast

Legendary Artifacts
4 Mox Opal (Banned in Modern)

Sorceries
2 Steelshaper's Gift

Artifact Lands
4 Darksteel Citadel

Basic Lands
1 Mountain

Lands
3 Blinkmoth Nexus
3 Glimmervoid
4 Inkmoth Nexus

Sideboard:
1 Mortarpod
2 Torpor Orb
3 Ethersworn Canonist
3 Spellskite
4 Blood Moon
2 Ancient Grudge