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 - $3,000.00
NM-Mint Non English - $3,000.00
Lightly Played - $2,850.00
Lightly Played Non English - $2,850.00
Moderately Played - $2,700.00
Moderately Played Non English - $2,700.00
Heavily Played - $2,400.00
Heavily Played Non English - $2,400.00
Damaged - $1,950.00
Damaged Non English - $1,950.00