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 - $1.777.100
Lightly Played - $1.421.700
Moderately Played - $1.244.000
Heavily Played - $1.066.300
Damaged - $888.600
Near Mint Spanish - $1.777.100
Lightly Played Spanish - $1.421.700
Moderately Played Spanish - $1.244.000
Heavily Played Spanish - $1.066.300
Damaged Spanish - $888.600