Sure, here is a writing prompt for you: Write a story about a time traveler who discovers a hidden room in a medieval castle that contains a mysterious object with the power to change the course of history

Sure, here is a writing prompt for you:

Write a story about a time traveler who discovers a hidden room in a medieval castle that contains a mysterious object with the power to change the course of history. What does the time traveler do with this power, and how does it impact the past, present, and future?