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 - $62.400
Lightly Played - $49.900
Moderately Played - $43.700
Heavily Played - $37.400
Damaged - $31.200
Near Mint Spanish - $62.400
Lightly Played Spanish - $49.900
Moderately Played Spanish - $43.700
Heavily Played Spanish - $37.400
Damaged Spanish - $31.200