Mewtwo-Mega-X @ Choice Scarf  
Ability: Shadow Tag  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Close Combat  
- Sacred Fire  
- Gunk Shot  
- Thousand Arrows  

Rayquaza-Mega @ Choice Specs  
Ability: Mold Breaker  
EVs: 4 Def / 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Draco Meteor  
- Aeroblast  
- Searing Shot  
- Volt Switch  

Arceus @ Lum Berry  
Ability: Prankster  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Encore  
- Recover  
- Destiny Bond  
- Defog  

Rotom-Fan (M) @ Lum Berry  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 4 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Recover  
- Stealth Rock  
- Chatter  
- Parting Shot  

Arceus @ Leftovers  
Ability: Wonder Guard  
EVs: 248 HP / 8 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Dark Void  
- Shell Smash  
- Substitute  
- Baton Pass  

Kyogre-Primal @ Lum Berry  
Ability: Mold Breaker  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Shell Smash  
- Moonblast  
- Dark Void  
- Steam Eruption