Ball of predictions or ball of questions and answers.
The magic ball is a mysterious item from the arsenal of seers and magicians. In the visual image that appears with the word "clairvoyant", among other mysterious attributes, there is always a shining magic ball.

People have used balls since ancient times.

This is a legendary mysterious attribute of sorcerers. Balls of glass and stone at all times have been faithful companions of soothsayers and magicians, both in real life and in books, films, television shows. These days, psychics who predict the future also use them everywhere.