The Memory Editor

"All characters in this story are at least 18 years old. In the event that they are canonically underage, their appearance here is in an AU in which they are of age."

The Memory Editor allows you to do exactly what it sounds like. Edit the memories of others.

Made by a drunk higher power on a bet, the device has fallen into mortal hands in recent years. Choose where the device lands and who gets to wield its powers.