Veng the Manipulator is one of the most hideous enemies to mankind the world has ever known. His unique combination of Psionic abilities and magic items allow him to sneak into his victims dreams, and modify and direct the dreams, as well as “adjust memories”. Over the years, he has ‘programmed’ an insidious network of totally devoted followers. Using his natural ability of ‘Wisdom Drain’, he has created an army of willing slaves.
A cave with weapons sunken into the walls, blades sticking out of the floor and ceiling, and so on. Possibly, any weapon used in it could be torn out of the hand and sink into the stone.