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 - $187.200
Lightly Played - $149.700
Moderately Played - $131.000
Heavily Played - $112.300
Damaged - $93.600
Near Mint Spanish - $187.200
Lightly Played Spanish - $149.700
Moderately Played Spanish - $131.000
Heavily Played Spanish - $112.300
Damaged Spanish - $93.600