Cloud Key (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] Psychic[-30] you may return another permanent

you may return another permanent you control that shares a permanent type with it to its owner's hand

Set: Sword & Shield: Silver Tempest Type: Metal Rarity: Secret Rare Retreat cost: Colorless

choose a creature or planeswalker card in that player's graveyard

Set: The Brothers' War Retro Artifacts Type: Artifact Rarity: Rare Cost: {5} Door to Nothingness enters the battlefield tapped

Cloud Key (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] Psychic[-30] you may return another permanentSet: 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*