![Cloud Key (Retro Schematic) [The Brothers' War Retro Artifacts] - La Boîte Mystère ( The Mystery Box)](http://laboitemystere.com/cdn/shop/products/7829117d-bbe9-5b08-a1f0-5f1b54c5bed3_f6dba47e-da3b-4fcc-aaba-b99e703a5f5a.jpg?v=1692540536&width=1946)
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Magic: The Gathering
Cloud Key (Retro Schematic) [The Brothers' War Retro Artifacts]
Cloud Key (Retro Schematic) [The Brothers' War Retro Artifacts]
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| 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
![Cloud Key (Retro Schematic) [The Brothers' War Retro Artifacts] - La Boîte Mystère ( The Mystery Box)](http://laboitemystere.com/cdn/shop/products/7829117d-bbe9-5b08-a1f0-5f1b54c5bed3_f6dba47e-da3b-4fcc-aaba-b99e703a5f5a.jpg?v=1692540536&width=1445)