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 {C}{C}{C}.
Near Mint - $61.00
Lightly Played - $58.00
Moderately Played - $48.75
Heavily Played - $36.75
Damaged - $30.50
Near Mint Non-English - $61.00
Lightly Played Non-English - $58.00
Moderately Played Non-English - $48.75
Heavily Played Non-English - $36.75
Damaged Non-English - $30.50