Affinity
A Modern deck, by Andrej Prost
1st place at a tournament in San Antonio, Texas, United States on 2017-04-01

Maindeck:

Artifacts
4 Cranial Plating
4 Springleaf Drum
1 Welding Jar

Artifact Creatures
4 Arcbound Ravager
4 Master of Etherium
2 Memnite
4 Ornithopter
4 Signal Pest
4 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 Island

Lands
4 Blinkmoth Nexus
2 Glimmervoid
4 Inkmoth Nexus
2 Spire of Industry

Sideboard:
1 Grafdigger's Cage
3 Etched Champion
1 Spellskite
2 Ghirapur Aether Grid
1 Dismember
2 Hurkyl's Recall
4 Spell Pierce
1 Wear