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}.
NM-Mint - $105.00
Lightly Played - $94.50
Moderately Played - $84.00
Heavily Played - $73.50
Damaged - $52.50
NM-Mint Non English - $105.00
Lightly Played Non English - $94.50
Moderately Played Non English - $84.00
Heavily Played Non English - $73.50
Damaged Non English - $52.50