Cramped Vents // Access Maze [Duskmourn: House of Horror Commander]

Set: Duskmourn: House of Horror Commander Type: Enchantment — Room // Enchantment Rarity: Rare Cost: {3}{B} // {5}{B}{B} (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.)Cramped VentsWhen you unlock this door, this Room deals 6 damage to target creature an opponent controls. You gain life equal to the excess damage dealt this way.Access MazeOnce during each of your turns, you may cast a spell from your hand by paying life equal to its mana value rather than paying its mana cost.