| Set: | Fourth Edition (Foreign White Border) |
| Type: | Artifact |
| Rarity: | Rare |
Mana Vault does not untap during your untap phase. If it remains tapped during your upkeep, Mana Vault deals 1 damage to you.4: Untap Mana Vault. Use this ability only during your upkeep.T: Add three colorless mana to your mana pool. Play these additions as interrupts.