Registeel @ Occa Berry  
Ability: Clear Body  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
- Amnesia  
- Iron Defense  
- Body Press  
- Rest  

Corviknight @ Maranga Berry  
Ability: Pressure  
Tera Type: Flying  
EVs: 252 HP / 40 Def / 16 SpD / 200 Spe  
Impish Nature  
IVs: 0 Atk  
- Light Screen  
- Body Press  
- Roost  
- Iron Defense  

Heatran @ Choice Specs  
Ability: Flash Fire  
EVs: 252 HP / 252 SpA / 4 SpD  
Modest Nature  
IVs: 0 Atk  
- Earth Power  
- Overheat  
- Heat Wave  
- Dark Pulse