Urza's Tower (Mountains) [CHR]

Rarity: U Creature Type or Sub Type: Land Rules Text Contains: T: Add one colorless mana to your mana pool. If you control Urza’s Mine, Urza’s Tower, and Urza’s Power Plant, add three colorless mana to your mana pool instead of one. Flavor: Urza always put Tocasia’s lessons on resource-gathering to effective use.