Altheus's Branding

Sometimes I get to have a little fun, and the enchantment is never permanent, but it is rather entertaining. I must admit, this is a personal favorite of mine.
- Arcane Scribe, Altheus Alvago

You target a creature that you can see within range, and then speak a phrase directed at that creature. The phrase must contain a word which you wish to become the target creature's name. That creature must make a wisdom saving throw, or fall under the effect of the spell. That creature believes and thinks that their name has always been the name you have chosen for an hour. After an hour has passed, the creature remembers it's true name.