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 - $1,188.00
Lightly Played - $950.40
Moderately Played - $831.60
Heavily Played - $712.80
Damaged - $594.00
Near Mint Spanish - $1,188.00
Lightly Played Spanish - $950.40
Moderately Played Spanish - $831.60
Heavily Played Spanish - $712.80
Damaged Spanish - $594.00