Kartana @ Focus Sash  
Ability: Parental Bond  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Searing Sunraze Smash  
- Sunsteel Strike  
- Shell Smash  
- Dragon Ascent  

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

Mewtwo-Mega-Y @ Pixie Plate  
Ability: Speed Boost  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
- Tail Glow  
- Photon Geyser  
- Earth Power  
- Judgment  

Yveltal @ Darkinium Z  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Parting Shot  
- Heal Order  
- Defog  
- Knock Off  

Blissey (F) @ Safety Goggles  
Ability: Innards Out  
EVs: 252 HP / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
IVs: 0 Atk / 0 Def  
- Volt Switch  
- Shore Up  
- Aromatherapy  
- Defog  

Doublade @ Eviolite  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Strength Sap  
- Shore Up  
- Haze  
- Volt Switch