I know I won't be able to participate in this and probably not the U.S. VGC either, but I will post my ideas. Also, I am sorry if I copy anything, but I only read the first page.
Sunny Day Team-Groudon(slow of course), Exeggutor, Cherrim(with Focus Sash or Endure), and a filler pokemon. The filler could be Roserade, a fire-type with heatwave, a weather-pokemon, etc. My thoughts are that Cherrim with Protect, Focus Sash, and Sunnyday could help thwart F/O users and set up sun if the weather has changed and Groudon is bye-bye.
Also, a gimmicky set would be to abuse fast and powerful Rock Slides coupled with other moves of course and maybe a wide lens. If your 2 pokemon use Rock Slide first and they both hit, than the opponent's pokemon have a 60% chance to flinch EACH. Can someone find the percent that at least one pokemon will flinch everyturn.
Sunny Day Team-Groudon(slow of course), Exeggutor, Cherrim(with Focus Sash or Endure), and a filler pokemon. The filler could be Roserade, a fire-type with heatwave, a weather-pokemon, etc. My thoughts are that Cherrim with Protect, Focus Sash, and Sunnyday could help thwart F/O users and set up sun if the weather has changed and Groudon is bye-bye.
Also, a gimmicky set would be to abuse fast and powerful Rock Slides coupled with other moves of course and maybe a wide lens. If your 2 pokemon use Rock Slide first and they both hit, than the opponent's pokemon have a 60% chance to flinch EACH. Can someone find the percent that at least one pokemon will flinch everyturn.