{T}, Sacrifice another artifact: Exile the top X cards of your library, where X is one plus the mana value of the sacrificed artifact. You may play those cards this turn.
2025-07-25
If an artifact has {X} in its mana cost, X is 0 for the purpose of determining its mana value.
2025-07-25
You pay all costs and follow all timing rules for cards played with the permission granted by Memorial Vault's ability. For example, if an exiled card is a land card, you may play it only during your main phase while the stack is empty.