Arceus-Ghost @ Lum Berry  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 30 HP / 0 Atk  
- Shell Smash  
- Boomburst  
- Shadow Ball  
- Gastro Acid  

Arceus-Grass @ Leftovers  
Ability: Neutralizing Gas  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
- Recover  
- Shell Smash  
- Close Combat  
- Add whatever move you think you need  

Deoxys-Speed @ Focus Sash  
Ability: Comatose  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Sleep Talk  
- Nature Power  
- Chatter  
- Whirlwind  

Arceus-Grass @ Leftovers  
Ability: No Guard  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Spore  
- Sheer Cold  
- Gastro Acid  
- Recover  

Dialga @ Lum Berry  
Ability: Magic Bounce  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Stealth Rock  
- Whirlwind  
- Sticky Web  
- Recover  

Dialga @ Lum Berry  
Ability: Neutralizing Gas  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Shell Smash  
- Spacial Rend  
- Flash Cannon/Fire Blast/Close Combat  
- Spore