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 - $69.00
Lightly Played - $65.50
Moderately Played - $55.25
Heavily Played - $41.50
Damaged - $34.50
Near Mint Non-English - $69.00
Lightly Played Non-English - $65.50
Moderately Played Non-English - $55.25
Heavily Played Non-English - $41.50
Damaged Non-English - $34.50