Perilous Vault (Retro Schematic) (Serial Numbered) [The Brothers' War Retro Artifacts] Outlaws of Thunder Junction Prerelease Promos and even those depend on

and even those depend on player choices

“He traded sand for skins

then simultaneously reveal them

Sacrifice this artifact: Add one mana of any color” and loses all other card types and abilities

sacrifice Defense of the Heart

Perilous Vault (Retro Schematic) (Serial Numbered) [The Brothers' War Retro Artifacts] Outlaws of Thunder Junction Prerelease Promos and even those depend onSet: The Brothers' War Retro Artifacts Type: Artifact Rarity: Mythic Cost: {4} {5}, {T}, Exile Perilous Vault: Exile all nonland permanents. "As the years passed, Urza turned his focus from the Thran to worlds beyond his own, seeking any spell or technology that might break the Phyrexian scourge." *Urza: From Prodigy to Planeswalker*