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Cavern of Souls (Topper) [Ultimate Masters Box Topper]
$99.50
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Set: Ultimate Masters Box Topper Type: Land Rarity: Mythic As Cavern of Souls enters the battlefield, choose a creature type.{T}: Add {C}.{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.
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