Cloud Key (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] Illustration Rare {7}: If you both own

{7}: If you both own and control Urza

Set: Secret Lair Drop Series Type: Artifact Creature — Construct Rarity: Rare Cost: {X}{X} Walking Ballista enters the battlefield with X +1/+1 counters on it

The Invasion Tree broke through the Blind Eternities and sent Phyrexian perfection coursing across the Multiverse

Whenever Tamiyo

depending on who won the Unknown event on February 18th

Cloud Key (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] Illustration Rare {7}: If you both ownSet: 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*