This is not a glitch, and not everyone knows it since my friend didn't know it.
You can get Shaymin and Darkrai with Tweaking Glitch, but it is harder to perform than in early Japanese games. It works because you tweak, then you walk up to the right place and end up behind a door, wich makes it possible to walk the right amount of steps to get to Darkrai/Shaymin.
You can get Shaymin and Darkrai with Tweaking Glitch, but it is harder to perform than in early Japanese games. It works because you tweak, then you walk up to the right place and end up behind a door, wich makes it possible to walk the right amount of steps to get to Darkrai/Shaymin.