4 Spire of Industry 4 Vault Skirge 4 Inkmoth Nexus 4 Signal Pest 2 Memnite 4 Mox Opal 3 Steel Overseer 4 Springleaf Drum 4 Cranial Plating 4 Arcbound Ravager 4 Darksteel Citadel 4 Blinkmoth Nexus 4 Ornithopter