4 Blinkmoth Nexus
4 Botanical Sanctum
2 Breeding Pool
4 Darksteel Citadel
3 Forest
3 Island
4 Ancient Stirrings
4 Arcbound Worker
4 Etherium Sculptor
4 Hangarback Walker
4 Hardened Scales
2 Karn, Scion of Urza
4 Metallic Mimic
4 Steel Overseer
2 The Antiquities War
4 Voltaic Servant
4 Walking Ballista
Sideboard:
3 Master of Etherium