Mew @ Mewnium Z  
Ability: Synchronize  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psychic  
- Nasty Plot  
- Fire Blast  
- Ice Beam  

Garchomp @ Loaded Dice  
Ability: Rough Skin  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Swords Dance  
- Scale Shot  
- Earthquake  
- Substitute  

Diancie-Mega @ Diancite  
Ability: Magic Bounce  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Stealth Rock  
- Magnet Rise  
- Earth Power  
- Moonblast  

Zamazenta @ Leftovers  
Ability: Dauntless Shield  
EVs: 252 HP / 136 Def / 120 Spe  
Jolly Nature  
- Iron Defense  
- Body Press  
- Substitute  
- Heavy Slam  

Volcarona @ Heavy-Duty Boots  
Ability: Flame Body  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Quiver Dance  
- Flamethrower  
- Hidden Power [Ice]  
- Bug Buzz  

Celesteela @ Power Herb  
Ability: Beast Boost  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Meteor Beam  
- Autotomize  
- Flamethrower  
- Air Slash