Camerupt @ Leftovers  
Ability: Solid Rock  
EVs: 252 HP / 172 SpD / 84 Spe  
Calm Nature  
IVs: 0 Atk  
- Earth Power  
- Lava Plume  
- Stealth Rock  
- Protect

Camerupt @ Choice Specs  
Ability: Solid Rock  
EVs: 4 Atk / 252 SpA / 252 Spe  
Timid Nature / Modest Nature
IVs: 2 Atk / 30 SpA  
- Eruption  
- Fire Blast  
- Earth Power  
- Hidden Power [Grass] / Explosion

Camerupt @ Life Orb 
Ability: Solid Rock  
EVs: 4 Atk / 252 SpA / 252 Spe  
Timid Nature
IVs: 2 Atk / 30 SpA  
- Rock Polish  
- Fire Blast  
- Earth Power  
- Hidden Power [Grass] / Hidden Power [Electric]