I love Slurpuff. My second favorite Pokemon ever. I have two of them, but I will post my physical sweeper.
Slurpuff: Cotton Candy Physical Knight
Item: Sitrus Berry
This set works greatly. First thing you want to do is use Wish before anything. On the next turn, use Belly Drum. The Sitrus Berry will restore a bit of your health, while Wish will heal the rest. With the berry gone, your speed will double thanks to its ability. With maximized attack, sweep with Play Rough. If you come across a Poison, Steel, or Fire type, which, correct me if I'm wrong, are the only types to resist Fairy type moves. Crush them with Hidden Power Ground. Hidden Power also helps if you happen to come across a physical wall.
Hope this helped!