Affinity
A Modern deck, by Seth Collum
1st place at a tournament in Findlay, Ohio, United States on 2015-09-19
As reported at www.starcitygames.com

Maindeck:

Artifacts
4 Cranial Plating
4 Springleaf Drum
1 Welding Jar

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

Instants
4 Galvanic Blast

Legendary Artifacts
4 Mox Opal (Banned in Modern)

Artifact Lands
4 Darksteel Citadel

Basic Lands
1 Mountain

Lands
4 Blinkmoth Nexus
3 Glimmervoid
4 Inkmoth Nexus

Sideboard:
1 Torpor Orb
1 Etched Champion
2 Blood Moon
1 Worship
2 Ancient Grudge
2 Spell Pierce
2 Wear
2 Thoughtseize
2 Whipflare