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 - $64.400
Lightly Played - $51.500
Moderately Played - $45.100
Heavily Played - $38.600
Damaged - $32.200
Near Mint Spanish - $64.400
Lightly Played Spanish - $51.500
Moderately Played Spanish - $45.100
Heavily Played Spanish - $38.600
Damaged Spanish - $32.200