Use it Myself

The Note said that the Pen allows to make changes to either Reality or Fictional Works, even create AU's for the later

Scratching my Head I think wether to believe the Note that had simply appeared in my room alongside a normal looking pen.

If it is real then one mistake could ruin my life, or erase me from existance. It would be safe to test it on a Fictional Work, but if it works and the Note is right......

Then I will only ever be able to use it on Fictional Works

But could I really risk it with Reality?

Besides what Fictional Work would I choose to test it on? There are so many Books and Movies not to mention Games