If nobody will mention it, I will
Gumshoos @ Red Card
Ability: Stakeout
EVs: 252 HP / 252 Atk / 4 Def
Adamant / Brave Nature
- Yawn
- Return
- Payback
- Earthquake / U-Turn
Start it off with a bang. Red Card to force the opponent to switch and eat a Stakeout Return in the face! I'm not sure what attacks it can survive but Max HP is our best bet here. Not sure if theres anything noteworthy with base 45 speed but Brave is an option if it does so you can assure you attack last. Yawn to force a switch on something else perhaps. Not sure how effective this will be but it's an option.