Dragonite @ Weakness Policy  
Ability: Multiscale  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Dragon Dance  
- Outrage  
- Extreme Speed  
- Earthquake  

Magnezone @ Assault Vest  
Ability: Magnet Pull  
EVs: 140 HP / 188 SpA / 180 Spe  
Modest Nature  
IVs: 0 Atk  
- Hidden Power [Fire]  
- Thunderbolt  
- Volt Switch  
- Flash Cannon  

Mamoswine (F) @ Focus Sash  
Ability: Oblivious  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
- Earthquake  
- Ice Shard  
- Stealth Rock  
- Endeavor  

Tapu Fini @ Leftovers  
Ability: Misty Surge  
EVs: 248 HP / 248 Def / 12 Spe  
Timid Nature  
- Taunt  
- Nature's Madness  
- Moonblast  
- Defog  

Blacephalon @ Ghostium Z  
Ability: Beast Boost  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Pain Split  
- Substitute  
- Mind Blown  
- Shadow Ball  

Latias-Mega @ Latiasite  
Ability: Levitate  
EVs: 252 HP / 4 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psyshock  
- Calm Mind  
- Roost  
- Ice Beam