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 - $84.200
Lightly Played - $67.400
Moderately Played - $59.000
Heavily Played - $50.500
Damaged - $42.100
Near Mint Spanish - $84.200
Lightly Played Spanish - $67.400
Moderately Played Spanish - $59.000
Heavily Played Spanish - $50.500
Damaged Spanish - $42.100