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 - $990.000
Lightly Played - $792.000
Moderately Played - $693.000
Heavily Played - $594.000
Damaged - $495.000
Near Mint Spanish - $990.000
Lightly Played Spanish - $792.000
Moderately Played Spanish - $693.000
Heavily Played Spanish - $594.000
Damaged Spanish - $495.000