Rayquaza-Mega @ Focus Sash  
Ability: Mold Breaker  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Mild Nature  
IVs: 30 HP  
- Clangorous Soulblaze  
- Dragon Ascent  
- Blue Flare  
- Shell Smash  

Diancie-Mega @ Focus Sash  
Ability: Pixilate  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Extreme Speed  
- V-create  
- Sunsteel Strike  
- Shell Smash  

Swampert-Mega @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 30 HP / 0 Spe  
- Thousand Waves  
- Stealth Rock  
- Strength Sap  
- U-turn  

Kyurem-White @ Focus Sash  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Mild Nature  
- Freeze-Dry  
- Sunsteel Strike  
- Moongeist Beam  
- Shell Smash  

Blissey (F) @ Grassium Z  
Ability: Innards Out  
EVs: 252 HP / 252 SpD  
Gentle Nature  
IVs: 0 Atk / 0 Def  
- Spiky Shield  
- Baton Pass  
- Soft-Boiled  
- Aromatherapy  

Rayquaza-Mega @ Choice Scarf  
Ability: Shadow Tag  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Clangorous Soulblaze  
- Menacing Moonraze Maelstrom  
- Searing Sunraze Smash  
- Trick