Heatran @ Custap Berry  
Ability: Flash Fire  
EVs: 208 HP / 212 SpA / 4 SpD / 84 Spe  
Modest Nature  
- Overheat  
- Flash Cannon  
- Ancient Power  
- Endure  

Porygon-Z @ Choice Specs  
Ability: Adaptability  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Hyper Beam  
- Uproar  
- Dark Pulse  
- Trick  

Slowbro @ Slowbronite  
Ability: Oblivious  
EVs: 252 HP / 4 Def / 252 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Amnesia  
- Iron Defense  
- Slack Off  
- Rest