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 - $1,000.00
Lightly Played - $900.00
Moderately Played - $800.00
Heavily Played - $700.00
Damaged - $500.00
NM-Mint Non English - $1,000.00
Lightly Played Non English - $900.00
Moderately Played Non English - $800.00
Heavily Played Non English - $700.00
Damaged Non English - $500.00