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 - $1.485.000
Lightly Played - $1.188.000
Moderately Played - $1.039.500
Heavily Played - $891.000
Damaged - $742.500
Near Mint Spanish - $1.485.000
Lightly Played Spanish - $1.188.000
Moderately Played Spanish - $1.039.500
Heavily Played Spanish - $891.000
Damaged Spanish - $742.500