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 - $53.25
Near Mint Non-English - $53.25
Lightly Played - $50.75
Lightly Played Non-English - $50.75
Moderately Played - $42.75
Moderately Played Non-English - $42.75
Heavily Played - $32.00
Heavily Played Non-English - $32.00
Damaged - $26.75
Damaged Non-English - $26.75