Power Leak [Revised Edition]

Set: Revised Edition Type: Enchantment — Aura Rarity: Common Cost: {1}{U} Enchant enchantmentAt 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.