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 - $92.10
Lightly Played - $73.70
Moderately Played - $64.50
Heavily Played - $55.30
Damaged - $46.10
Near Mint Spanish - $92.10
Lightly Played Spanish - $73.70
Moderately Played Spanish - $64.50
Heavily Played Spanish - $55.30
Damaged Spanish - $46.10