Affinity
A Modern deck, by Christian Seibold
6th place at a tournament in Valencia, Spain on 2014-02-23
As reported at http://www.wizards.com/magic/magazine/Article.aspx?x=mtg/daily/eventcoverage/ptbng14/top_8_decks

Maindeck:
1 Island

Artifacts
4 Cranial Plating
4 Springleaf Drum
1 Welding Jar

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

Instants
1 Galvanic Blast

Legendary Artifacts
4 Mox Opal (Banned in Modern)

Sorceries
4 Thoughtcast

Artifact Lands
4 Darksteel Citadel

Lands
4 Blinkmoth Nexus
3 Glimmervoid
4 Inkmoth Nexus

Sideboard:
2 Relic of Progenitus
1 Torpor Orb
1 Etched Champion
1 Master of Etherium
2 Spellskite
1 Blood Moon
2 Ancient Grudge
1 Galvanic Blast
1 Spell Pierce
2 Thoughtseize
1 Whipflare