Diancie-Mega @ Leftovers  
Ability: Pixilate  
EVs: 248 HP / 252 Atk / 4 SpA / 4 Spe  
Brave Nature  
- Fake Out  
- Extreme Speed  
- Boomburst  
- Toxic Spikes  

Rayquaza-Mega @ Sky Plate  
Ability: Gale Wings  
EVs: 248 HP / 8 Def / 252 SpA  
Modest Nature  
IVs: 0 Atk  
- Spikes  
- Taunt  
- Oblivion Wing  
- Chatter  

Deoxys-Speed @ Leftovers  
Ability: Wonder Guard  
EVs: 248 HP / 8 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Substitute  
- Baton Pass  
- Gastro Acid  
- Taunt  

Arceus @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Parting Shot  
- Defog  
- Aromatherapy  
- Roost  

Groudon-Primal @ Shed Shell  
Ability: Mold Breaker  
EVs: 208 HP / 252 Atk / 48 Spe  
Adamant Nature  
- Shell Smash  
- Thousand Arrows  
- King's Shield  
- Recover  

Giratina @ Toxic Orb  
Ability: Poison Heal  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Roost  
- Will-O-Wisp  
- Roar  
- Foul Play