Mewtwo-Mega-X @ Focus Sash  
Ability: Huge Power  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Sacred Fire  
- Gunk Shot  
- Close Combat  
- Fusion Bolt  

Regigigas @ Splash Plate  
Ability: Huge Power  
EVs: 248 HP / 252 Atk / 8 Def  
Adamant Nature  
- Fake Out  
- Extreme Speed  
- Water Shuriken  
- Pursuit  

Audino-Mega @ Lum Berry  
Ability: Wonder Guard  
EVs: 252 HP / 252 Def / 4 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Defog  
- King's Shield  
- Wish  
- U-turn  

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

Dialga @ Mental Herb  
Ability: Mold Breaker  
EVs: 232 HP / 8 Def / 252 SpA / 16 Spe  
Modest Nature  
IVs: 0 Atk  
- Spore  
- Shell Smash  
- Spacial Rend  
- Searing Shot  

Manectric-Mega @ Earth Plate  
Ability: Wonder Guard  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Stealth Rock  
- Glare  
- Judgment  
- Volt Switch