Regirock @ Shed Shell
Ability: Sand Stream  
EVs: 248 HP / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Stealth Rock  
- Slack Off  
- Skill Swap  
- Baton Pass  

Skarmory @ Mail
Ability: Magic Bounce  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- U-turn  
- Rapid Spin  
- Soft-Boiled  
- Whirlwind  

Groudon @ Choice Band  
Ability: Prankster  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Adamant Nature  
- Nature Power  
- Copycat  
- Spore  
- Trick  

Dialga @ Earth Plate  
Ability: Mold Breaker  
EVs: 248 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Spore  
- Shell Smash  
- Dragon Pulse  
- Judgment  

Swampert @ Lum Berry  
Ability: Wonder Guard  
EVs: 248 HP / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Spikes  
- Recover  
- Magic Coat  
- Baton Pass  

Pokestar-Spirit @ Leftovers
Ability: Wonder Guard  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- U-turn  
- Aromatherapy  
- Roost  
- Sleep Talk