Polluted Cistern // Dim Oubliette (DSC) (#23)

Name: Polluted Cistern
Mana Cost: {1}{B}
Type: Enchantment — Room
Oracle Text: Whenever one or more cards are put into your graveyard from your library, each opponent loses 1 life for each card type among those cards. (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.)
Artist: Arthur Yuan
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Name: Dim Oubliette
Mana Cost: {4}{B}
Type: Enchantment — Room
Oracle Text: When you unlock this door, mill three cards, then return a creature card from your graveyard to the battlefield. (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.)
Artist: Arthur Yuan