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 - $61.40
Lightly Played - $49.10
Moderately Played - $43.00
Heavily Played - $36.90
Damaged - $30.70
Near Mint Spanish - $61.40
Lightly Played Spanish - $49.10
Moderately Played Spanish - $43.00
Heavily Played Spanish - $36.90
Damaged Spanish - $30.70