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 - £90.20
Lightly Played - £76.70
Moderately Played - £63.20
Heavily Played - £45.10
Damaged - £27.10
Near Mint Non English - £90.20
Lightly Played Non English - £76.70
Moderately Played Non English - £63.20
Heavily Played Non English - £45.10
Damaged Non English - £27.10