![Cloud Key (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts]](https://cdn.shopify.com/s/files/1/0451/3388/9694/files/0400386a8f9d688fc9554a9e2ada4b37.jpg?v=1719469712)
Cloud Key (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts]
| Set: | 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.
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*