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 - $60.400
Lightly Played - $48.400
Moderately Played - $42.300
Heavily Played - $36.300
Damaged - $30.200
Near Mint Spanish - $60.400
Lightly Played Spanish - $48.400
Moderately Played Spanish - $42.300
Heavily Played Spanish - $36.300
Damaged Spanish - $30.200