The Dark Tower: 15 Easter Eggs You Probably Missed

When the Man in Black's cronies attempt to snatch Jake from Roland, Matthew McConaughey's sorcerer uses a mysterious orb to view the action from a distance.

This isn't just any orb, it's another important item from the books which is glazed over in the movie - The Black Thirteen, one of several magical stones collectively known as Maerlyn’s Rainbow.

In the novels, the Maerlyn’s Rainbow stones are some of the most dangerous and powerful artifacts in the Dark Tower universe, the Black Thirteen especially.

The Man in Black uses this particular orb to communicate with the Crimson King throughout the saga, but its significance is never acknoledged in the film.