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 - $46.700
Lightly Played - $37.400
Moderately Played - $32.700
Heavily Played - $28.000
Damaged - $23.400
Near Mint Spanish - $46.700
Lightly Played Spanish - $37.400
Moderately Played Spanish - $32.700
Heavily Played Spanish - $28.000
Damaged Spanish - $23.400