Blissey (F) @ Leftovers  
Ability: Imposter  
EVs: 252 HP / 252 Def / 4 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Spikes  
- Whirlwind  
- Wish  
- Heal Bell  

Aegislash @ Leftovers  
Ability: Magic Bounce  
EVs: 248 HP / 8 SpD / 252 Spe  
Calm Nature  
IVs: 0 Atk  
- Substitute  
- Baton Pass  
- Curse  
- Roost  

Groudon-Primal @ Shed Shell  
Ability: Mold Breaker  
EVs: 192 HP / 252 Atk / 64 Spe  
Adamant Nature  
- Dark Void  
- Shell Smash  
- Thousand Arrows  
- Recover  

Gyarados-Mega @ Lum Berry  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 4 Spe  
Adamant Nature  
- Water Shuriken  
- Pursuit  
- Sucker Punch  
- Beat Up  

Audino-Mega @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 4 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Baton Pass  
- Defog  
- Aromatherapy  
- Recover  

Deoxys-Speed @ Leftovers  
Ability: Wonder Guard  
EVs: 208 HP / 48 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Stealth Rock  
- Psystrike  
- Substitute  
- Baton Pass