Blastoise-Mega @ Blastoisinite  
Ability: Mega Launcher  
EVs: 248 HP / 204 Def / 56 SpA  
Modest Nature  
IVs: 0 Atk  
- Water Pulse  
- Dark Pulse  
- Counter  
- Mirror Coat  

Magnezone @ Custap Berry  
Ability: Sturdy  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Flash Cannon  
- Volt Switch  
- Mirror Coat  
- Protect  

Victini @ Choice Scarf  
Ability: Victory Star  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- V-create  
- Bolt Strike  
- U-turn  
- Zen Headbutt  

Mew @ Mewnium Z  
Ability: Synchronize  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psychic  
- Fire Blast  
- Focus Blast  
- Counter  

Tyranitar @ Focus Sash  
Ability: Sand Stream  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Stone Edge  
- Crunch  
- Pursuit  
- Counter  

Chansey @ Eviolite  
Ability: Natural Cure  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
- Seismic Toss  
- Counter  
- Stealth Rock  
- Soft-Boiled