I was messing up with PKHeX Event flags in XY, and managed to rebattle Xerneas/Yveltal. Unfortunately this isn't a simple flag. First, the flags that enable Xerneas/Yveltal in HQ basement are the following: Flag Status 0837 - UnSet Flag Status 0838 - Set The big problem now is that there's no way enter the Team Flare's HQ in Geosense Town after the events are finished. So, we must change other stuffs: Constant 159 must have value 7 to enable entering the elevator in the big rock (a