Affinity
A Modern deck, by Ethan Brown
3rd place at a tournament in Portland, Oregon, United States on 2016-04-24
As reported at www.starcitygames.com

Maindeck:
1 Mountain

Artifacts
4 Cranial Plating
4 Springleaf Drum

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

Instants
4 Galvanic Blast

Legendary Artifacts
4 Mox Opal (Banned in Modern)

Sorceries
3 Thoughtcast

Artifact Lands
4 Darksteel Citadel

Lands
4 Blinkmoth Nexus
3 Glimmervoid
4 Inkmoth Nexus

Sideboard:
1 Grafdigger's Cage
1 Relic of Progenitus
1 Etched Champion
2 Spellskite
1 Ghirapur Aether Grid
2 Ancient Grudge
1 Dismember
2 Stubborn Denial
1 Wear
1 Thoughtseize
2 Whipflare