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 - $3,550.00
NM-Mint Non English - $3,550.00
Lightly Played - $3,372.50
Lightly Played Non English - $3,372.50
Moderately Played - $3,195.00
Moderately Played Non English - $3,195.00
Heavily Played - $2,840.00
Heavily Played Non English - $2,840.00
Damaged - $2,307.50
Damaged Non English - $2,307.50