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 - $69.300
Lightly Played - $55.500
Moderately Played - $48.500
Heavily Played - $41.600
Damaged - $34.700
Near Mint Spanish - $69.300
Lightly Played Spanish - $55.500
Moderately Played Spanish - $48.500
Heavily Played Spanish - $41.600
Damaged Spanish - $34.700