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}.
Near Mint - £4,189.60
Lightly Played - £3,561.20
Moderately Played - £2,932.80
Heavily Played - £2,094.80
Damaged - £1,256.90
Near Mint Non English - £4,189.60
Lightly Played Non English - £3,561.20
Moderately Played Non English - £2,932.80
Heavily Played Non English - £2,094.80
Damaged Non English - £1,256.90