Hatterene (F) @ Weakness Policy  
EVs: 252 HP / 252 SpA 
Quiet Nature  
- Stored Power  

Clefairy @ Eviolite  
Ability: Friend Guard  
EVs: 252 HP / 252 Def  
Bold Nature   
- Fake Tears  

Alcremie (F) @ Covert Cloak  
Ability: Sweet Veil  
EVs: 252 HP / 252 Def  
Bold Nature  
- Decorate  

Oranguru @ Choice Specs  
Ability: Symbiosis  
EVs: 252 HP / 252 Def  
Bold Nature  
- Instruct  

***STRAT***
-Alcremie DECORATE on Hat
-Oranguru INSTRUCT Alcremie AFTER decorate
-Clefairy do FAKE TEARS on Swampert
-Hat STORED POWER on Swampert