I send my small squad of Milotic to Hydro Pump the **** outta Groudon,which they do. My hill.
After that, I take every single pokemon from all 5 Regions outta my PC, they are ALL LVL 100, including legendaries, build a unbreakable, unpenatrable castle with my pokemon, and circle them around the outside of the castle. The castle is 100 feet tall and wide. I have enough supplies and food to last me and the pokemon forever. And the pokemon are all mine.
And in case they fail, which i highly doubt, I have fully loaded state-of-art modern weapons of mass destruction that NEVER malfuntion-and lots of ammo- with me to prevent you or your little buddies to try to take over this hill/castle. My heavily defended hill.
I do belive I have won, yes?