Simple fix. Bring Mega Sableye. He can bounce back any entry hazards,( which shouldn't be a problem anyways since you're most likely going to lead with this), can set up Sunny Day, and role play Shedinja to get wonder guard, making him able to withstand any attack in the game, due to Fairy having almost no physical moves, and him having an insane special defense. On top of all this, he can quash super effective hitters, use Fire punch, ice punch, signal beam, or other moves to help kill gras types. Plus, Shedinja gets many bug type moves, so he can help as well