Affinity
A Modern deck, by Davide Colla
4th place at a tournament in Lyon, France on 2012-11-04
As reported at http://www.wizards.com/Magic/Magazine/Article.aspx?x=mtg/daily/eventcoverage/gplyo12/welcome#1

Maindeck:

Artifacts
4 Cranial Plating
4 Springleaf Drum
2 Welding Jar

Artifact Creatures
3 Arcbound Ravager
3 Master of Etherium
4 Memnite
4 Ornithopter
4 Signal Pest
4 Steel Overseer
4 Vault Skirge

Legendary Artifacts
4 Mox Opal (Banned in Modern)

Sorceries
4 Thoughtcast

Artifact Lands
4 Darksteel Citadel

Basic Lands
1 Island

Lands
4 Blinkmoth Nexus
3 Glimmervoid
4 Inkmoth Nexus

Sideboard:
4 Etched Champion
2 Ethersworn Canonist
2 Rest in Peace
2 Ancient Grudge
3 Dismember
2 Thoughtseize