1 Academy Ruins 2 Aether Hub 4 Ancient Stirrings 4 Chromatic Sphere 4 Chromatic Star 4 Darksteel Citadel 1 Emrakul, the Aeons Torn 2 Engineered Explosives 2 Everflowing Chalice 1 Forest 2 Hangarback Walker 4 Ichor Wellspring 2 Inventors' Fair 4 Krark-Clan Ironworks 2 Mind Stone 4 Mox Opal 4 Sanctum of Ugin 4 Scrap Trawler 3 Spire of Industry 4 Terrarion 2 Thoughtcast 2 Defense Grid 3 Ghirapur Aether Grid 1 Nature's Claim 2 Nihil Spellbomb 2 Pyroclasm 1 Seal of Primordium 2 Wear // Tear 2 Wurmcoil Engine