Affinity
A Modern deck, by Christopher Arico
2nd place at a tournament in Dallas-Fort Worth, Texas, United States on 2015-05-17

Maindeck:

Artifacts
4 Cranial Plating
4 Springleaf Drum

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

Instants
3 Galvanic Blast

Legendary Artifacts
4 Mox Opal (Banned in Modern)

Artifact Lands
4 Darksteel Citadel

Basic Lands
1 Mountain

Lands
4 Blinkmoth Nexus
4 Glimmervoid
3 Inkmoth Nexus

Sideboard:
1 Dragon's Claw
1 Torpor Orb
1 Etched Champion
1 Spellskite
2 Blood Moon
1 Rest in Peace
1 Ancient Grudge
1 Gut Shot
2 Wear
3 Thoughtseize
1 Whipflare