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 - £242.40
Lightly Played - £206.10
Moderately Played - £169.70
Heavily Played - £121.20
Damaged - £72.80
Near Mint Non English - £242.40
Lightly Played Non English - £206.10
Moderately Played Non English - £169.70
Heavily Played Non English - £121.20
Damaged Non English - £72.80