Steelix @ Iapapa Berry  
Ability: Sturdy  
EVs: 244 HP / 252 Atk / 12 Spe  
Adamant Nature  
- Protect  
- Torment  
- Heavy Slam  
- Earthquake  

Darmanitan @ Choice Scarf  
Ability: Sheer Force  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Flare Blitz  
- Rock Slide  
- Earthquake  
- Trick  

Rillaboom @ Choice Band  
Ability: Overgrow  
EVs: 240 HP / 56 Def / 180 SpD / 32 Spe  
Impish Nature  
- Wood Hammer  
- Drum Beating  
- Earthquake  
- Knock Off