prognosticator (noun)

1. Why did the prognosticator bring an umbrella to the wedding? Because he predicted a chance of showers!

2. In the magical realm of Zephyria, the powerful prognosticator foretold the return of the ancient dragon.

3. The young couple eagerly sought the advice of the renowned prognosticator to know if their love will stand the test of time.

4. According to ancient Greek mythology, the oracle at Delphi was considered the greatest prognosticator of the future.