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 - $2,318.60
Lightly Played - $1,854.90
Moderately Played - $1,623.00
Heavily Played - $1,391.20
Damaged - $1,159.30
Near Mint Spanish - $2,318.60
Lightly Played Spanish - $1,854.90
Moderately Played Spanish - $1,623.00
Heavily Played Spanish - $1,391.20
Damaged Spanish - $1,159.30