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 - $5,237.00
NM-Mint Non English - $5,237.00
Lightly Played - $4,975.20
Lightly Played Non English - $4,975.20
Moderately Played - $4,713.30
Moderately Played Non English - $4,713.30
Heavily Played - $4,189.60
Heavily Played Non English - $4,189.60
Damaged - $3,404.10
Damaged Non English - $3,404.10