name: Polluted Cistern // Dim Oubliette
originalText: Dim Oubliette\no4o\nB\nWhen you unlock this door, mill three cards, then return a creature card from your graveyard to the battlefield.
printings: DSC
text: When you unlock this door, mill three cards, then return a creature card from your graveyard to the battlefield.\n(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)