Zygarde-Complete @ Leftovers  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Lovely Kiss  
- Substitute  
- Baton Pass  

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

Metagross-Mega @ Choice Scarf  
Ability: Shadow Tag  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Adamant Nature  
- Strength Sap  
- Spectral Thief  
- Let's Snuggle Forever  
- Searing Sunraze Smash  

Mewtwo-Mega-Y @ Leppa Berry  
Ability: Parental Bond  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Extreme Evoboost  
- Photon Geyser  
- Hidden Power [Fire]  
- Moonblast  

Slaking @ Leppa Berry  
Ability: Huge Power  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Adamant Nature  
- Fake Out  
- Extreme Speed  
- Sunsteel Strike  
- Extreme Evoboost  

Blissey (F) @ Lum Berry  
Ability: Innards Out  
EVs: 252 HP / 252 Atk / 252 SpD  
Gentle Nature  
IVs: 0 Def / 0 Spe  
- Magic Coat  
- Shore Up  
- Whirlwind  
- U-turn