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 - $1,499.00
Lightly Played - $1,349.10
Moderately Played - $1,199.20
Heavily Played - $1,049.30
Damaged - $749.50
NM-Mint Non English - $1,499.00
Lightly Played Non English - $1,349.10
Moderately Played Non English - $1,199.20
Heavily Played Non English - $1,049.30
Damaged Non English - $749.50