Cloud Key (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] U-CRU053 Gain [1 Resource] for each

Gain [1 Resource] for each Mechanologist card banished this way

Set: The Legend of Blue Eyes White Dragon Card type: Normal Monster Rarity: Common Attack: 1300 Defense: 900 This fiend passes judgement on enemies that are locked in coffins

you can hijack an opponent's Normal Spell/Trap Card or monster effect

you can Special Summon this card (from your hand)

Cloud Key (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] U-CRU053 Gain [1 Resource] for eachSet: The Brothers' War Retro Artifacts Type: Artifact Rarity: Rare Cost: {3} As Cloud Key enters the battlefield, choose artifact, creature, enchantment, instant, or sorcery. Spells you cast of the chosen type cost {1} less to cast. "A key only unlocks a door. Its wielder must choose whether to cross the threshold." *Hurkyl's Metaphysics, vol. II*