Storm the Vault [Rivals of Ixalan]
Set: Rivals of Ixalan Type: Legendary EnchantmentLegendary Land Rare Cost: {2}{U}{R} Storm the Vault Whenever one or more creatures you control deal combat damage to a player, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") At the beginning of your end step, if you control five or more artifacts, transform Storm the Vault. Vault of Catlacan (Transforms from Storm the Vault.) {T}: Add one mana of any color. {T}: Add {U} for each artifact you control.