Aggron @ Choice Band  
Ability: Sturdy  
EVs: 248 HP / 252 Atk / 8 Spe  
Adamant Nature  
- Head Smash  
- Avalanche  
- Heavy Slam  
- Superpower  

Rotom-Heat @ Electrium Z  
Ability: Levitate  
EVs: 40 HP / 252 SpA / 216 Spe  
Timid Nature  
IVs: 0 Atk  
- Overheat  
- Thunder  
- Toxic  
- Uproar  

Dragonite @ Flyinium Z  
Ability: Multiscale  
EVs: 88 HP / 172 SpA / 248 SpD  
Quiet Nature  
- Hurricane  
- Extreme Speed  
- Ice Beam  
- Protect