Diancie-Mega @ Diancite  
Ability: Magic Bounce  
EVs: 4 Atk / 252 SpA / 252 Spe  
Hasty Nature  
- Hidden Power [Fire]  
- Moonblast  
- Diamond Storm  
- Earth Power  

Landorus-Therian (M) @ Focus Sash  
Ability: Intimidate  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Stealth Rock  
- Earthquake  
- Defog  
- Rock Tomb  

Dragonite @ Flyinium Z  
Ability: Multiscale  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Dance  
- Fly  
- Earthquake  
- Extreme Speed  

Kommo-o @ Custap Berry  
Ability: Bulletproof  
EVs: 52 HP / 204 Atk / 252 Spe  
Jolly Nature  
- Swords Dance  
- Substitute  
- Drain Punch  
- Thunder Punch  

Serperior @ Choice Scarf  
Ability: Contrary  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 1 Atk  
- Leaf Storm  
- Glare  
- Defog  
- Hidden Power [Fire]  

Magearna @ Shuca Berry  
Ability: Soul-Heart  
EVs: 20 HP / 252 SpA / 236 Spe  
Modest Nature  
IVs: 0 Atk  
- Shift Gear  
- Thunderbolt  
- Ice Beam  
- Focus Blast