Regirock @ Leftovers  
Ability: Clear Body  
EVs: 252 HP / 252 Atk / 4 Spe  
Adamant Nature  
- Rock Slide  
- Superpower / Earthquake  
- Explosion  
- Earthquake / Thunder Wave / Protect / Toxic  

Regirock @ Leftovers  
Ability: Clear Body  
EVs: 252 HP / 32 Atk / 224 SpD  
Careful Nature  
- Protect  
- Explosion / Toxic / Thunder Wave  
- Rock Slide  
- Earthquake  

Regirock @ Leftovers  
Ability: Clear Body  
EVs: 252 HP / 56 Atk / 200 Def  
Impish Nature  
- Thunder Wave / Protect   
- Explosion  
- Rock Slide  
- Superpower / Earthquake