7) Nate Lets Julius Caesar Pull a Back to the Future: Part II
After various historical figures get redistributed throughout the timeline, the Legends begin the process of tracking down these anomalies. First up is Julius Caesar, who ends up hanging around in modern-day Aruba. But when the Legends pick up the Roman dictator, Caesar manages to grab a Roman history book Nate left lying around on the Waverider, which he uses to learn about his upcoming assassination, and (somehow?) prevent the Roman Empire from falling and thus conquering the world. The giant nerd that he is, Nate should have known better than to give a historical figure the opportunity to Biff Tannen the timeline up. (Season 3, “Aruba-Con”)