Audino-Mega @ Safety Goggles  
Ability: Wonder Guard  
EVs: 248 HP / 252 Def / 8 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Soft-Boiled  
- Aromatherapy  
- Parting Shot  
- Stealth Rock  

Mawile-Mega @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 252 Atk / 8 Def  
Adamant Nature  
- Recover  
- Defog  
- Toxic  
- Gear Grind  

Whimsicott @ Leftovers  
Ability: Prankster  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Spore  
- Recover  
- Encore  
- Spikes  

Xerneas @ Shed Shell  
Ability: Magic Bounce  
EVs: 248 HP / 8 Def / 252 SpA  
Modest Nature  
IVs: 0 Atk  
- Taunt  
- Recover  
- Moonblast  
- Parting Shot