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 - $132.000
Lightly Played - $105.600
Moderately Played - $92.400
Heavily Played - $79.200
Damaged - $66.000
Near Mint Spanish - $132.000
Lightly Played Spanish - $105.600
Moderately Played Spanish - $92.400
Heavily Played Spanish - $79.200
Damaged Spanish - $66.000