The Dungeon of Abkadev

From the introduction: After finally imprisoning his nemesis Abkadev, your patron the wizard M’nop sends you from his own impenetrable tower to loot the enemy’s lethal dungeon, equipping you with a magic orb to return you to him when you find the Tome of Vyxz and speak the magic words. As he recites them to you, the imprisoned Abkadev squirms...