4 Arcum's Astrolabe 1 Breeding Pool 2 Darksteel Citadel 4 Engineered Explosives 4 Everflowing Chalice 2 Force of Negation 1 Mirrodin Besieged 4 Mishra's Bauble 4 Mox Opal 4 Paradoxical Outcome 2 Pentad Prism 4 Polluted Delta 4 Prismatic Vista 2 Repeal 1 Saheeli, Sublime Artificer 2 Sai, Master Thopterist 4 Serum Visions 1 Snow-Covered Forest 5 Snow-Covered Island 1 Snow-Covered Swamp 4 Urza, Lord High Artificer 2 Collective Brutality 2 Disdainful Stroke 3 Fatal Push 2 Grafdigger's Cage 3 Nature's Claim 3 Veil of Summer