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 - $63.400
Lightly Played - $50.700
Moderately Played - $44.400
Heavily Played - $38.100
Damaged - $31.700
Near Mint Spanish - $63.400
Lightly Played Spanish - $50.700
Moderately Played Spanish - $44.400
Heavily Played Spanish - $38.100
Damaged Spanish - $31.700