Card Text: Target enchantment costs 2 extra mana during the upkeep phase of each of its controller's turns. If target enchantment's controller cannot or will not pay this extra mana, Power Leak does 1 damage to him or her for each unpaid mana.
Oracle Text: Enchant enchantment At the beginning of the upkeep of enchanted enchantment's controller, that player may pay any amount of mana. Power Leak deals 2 damage to that player. Prevent X of that damage, where X is the amount of mana that player paid this way.
Flavor Text:The ground itself lends its strength to these walls of living stone, which possess the stability of ancient mountains. These mighty bulwarks thwart ground-based troops, providing welcome relief for weary warriors who defend the land.