>>21612662There was the Deermooch set, or so I liked to call it because thats all it was good for.
>Heart Swap>Destiny Bond>Extreme Speed>Baton Pass>With Focus SashBasically you come in on Xerneas and Destiny Bond, forcing it to either keep boosting, kill you and itself or switch out. If it keeps boosting, you use Heart Swap on the last Geomancy turn and baton pass to virtually anyone capable of abusing said boosts. Any other outcome in this situation still gives you the advantage.
Of course, you need master hazard control to pull it off. Even if the opponent doesn't have Xerneas, it can be used on other setup sweepers that you outpace, don't have priority or boost speed.