Crystal Ball

The Crystal Ball, a quintessential tool of Divination, makes its most prominent appearance in the Harry Potter series as part of Professor Sybill Trelawney's mystical curriculum at Hogwarts. Introduced in the third book, it serves as a medium for students to glimpse the future, though its visions are often vague or influenced by the seer's imagination rather than true prophecy. Across the series, crystal balls underscore the dubious nature of Divination as a discipline, with no significant evolution or recurrence in later books, fading into the background of magical artifacts.