After you got 5 stars in your trainer card you go to Mossdeep city and go to A white rock you will saw a girl you talk with her.She will give it to you and you go to the rock again and click A you will find a legendary pokemon called Jirachi.
That is a lie! There is no wish tag in any of the pokemon games!
There is no wish tag in any of the 4 or 5 generations of pokemon. .