"I wish, that my son who now is trapped in the body of a woman, when he wakes up tomorrow morning, will be fully and completely transformed in mind to match her new body and that everyone will treat her as if she was no one else, but who she is today. She will know all of the ins and outs of being a woman, and will have nothing but memories of being a girl before today. I further wish, that once these changes occur to her, I will also get all new memories where I will only remember my son as the daughter she is now. Finally, I wish that one day in the future, as I now no longer have a son to leave this to, if my new daughter one day has a son that he will inherit this stone and one day pass it on to his son."
And with that, many bright flashes light up the entire house.
"And, you, my nosy guest, you best return to your time, and do your best to be careful to not repeat these mistakes. An innocent wish without boundaries can have very dire consequences."
And with that Jon returned to the present, with a note in his hand that had the same words on it.