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 - $1.930.500
Lightly Played - $1.544.400
Moderately Played - $1.351.400
Heavily Played - $1.158.300
Damaged - $965.300
Near Mint Spanish - $1.930.500
Lightly Played Spanish - $1.544.400
Moderately Played Spanish - $1.351.400
Heavily Played Spanish - $1.158.300
Damaged Spanish - $965.300