Power Leak (Retro) [30th Anniversary Edition] Demon Kraken You may spend mana as

You may spend mana as though it were mana of any type to cast creature spells

Whenever you attack

(Damage is dealt to you in the form of poison counters

Reverse Type: Legendary Creature — Demon Flying

Set: The Brothers' War Retro Artifacts Type: Artifact Rarity: Rare Cost: {2} Each spell costs {3} more to cast except during its controller's turn

Power Leak (Retro) [30th Anniversary Edition] Demon Kraken You may spend mana asSet: 30th Anniversary Edition Type: Enchantment Aura Rarity: 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.