Mewtwo-Mega-Y @ Leppa Berry  
Ability: Harvest  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Light That Burns the Sky  
- Searing Sunraze Smash  
- Spore  
- Roost  

Groudon-Primal @ Choice Scarf  
Ability: Shadow Tag  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- First Impression  
- V-create  
- Let's Snuggle Forever  
- Thousand Arrows  

Gyarados-Mega @ Safety Goggles  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Shore Up  
- Parting Shot  
- Spectral Thief  
- Pursuit  

Audino-Mega @ Darkinium Z  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- U-turn  
- Shore Up  
- Defog  
- Magic Coat  

Blissey (F) @ Lum Berry  
Ability: Innards Out  
EVs: 252 HP / 252 SpA / 252 SpD / 252 Spe  
Mild Nature  
IVs: 0 Atk / 0 Def  
- Shell Smash  
- Whirlwind  
- Moongeist Beam  
- Baton Pass  

Regigigas @ Lum Berry  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- Photon Geyser  
- Extreme Speed  
- Bonemerang