Tower of the Baleful Watcher (A Beholder's Lair)
https://www.dmsguild.com/product/533040/Tower-of-the-Baleful-Watcher-A-Beholders-Lair A perilous expedition steeped in mystery and dread awaits characters of 10th or 11th level. On the edge of a churning sea, a craggy hill rises like a wound in the earth, crowned by an ancient tower. A colossal 70-foot gash—half as wide—splits the hillside like a ruptured scar, beckoning intruders into shadow. Unnatural black birds circle the summit, their cries swallowed by the wind. Beneath this haunted peak lies the lair of a paranoid beholder—a twisted genius consumed by delusion and design. What horrors has it prepared for those bold enough to enter? Taking inspiration from the legendary Tomb of Horrors, this self-contained adventure can be dropped into nearly any campaign setting or run as a high-stakes one-shot. The adventure uses creatures from the *Monster Manual*, which is required for play. This beholder's lair can be dropped into any ongoing adventure with ease. The ...