Power Leak [Revised Edition (Foreign Black Border)]

Set: Revised Edition (Foreign Black Border) Type: Enchantment — Aura Common Cost: {1}{U} 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.