Magic: the Gathering - Datenbank
Revised
Mana Vault
[1]
Artifact
Mana Vault doesn't untap during your untap step.
At the beginning of your upkeep, you may pay [4]. If you do, untap Mana Vault.
At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you.
[T]: Add [3] to your mana pool.
Nr:263