Garchomp @ Rocky Helmet  
Ability: Rough Skin  
EVs: 252 HP / 136 Def / 120 Spe  
Jolly Nature  
- Stealth Rock  
- Earthquake  
- Aqua Tail  
- Toxic  

Ferrothorn @ Leftovers  
Ability: Iron Barbs  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Spikes  
- Knock Off  
- Leech Seed  
- Power Whip  

Pelipper @ Damp Rock  
Ability: Drizzle  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
- Scald  
- Roost  
- U-turn  
- Defog  

Barraskewda @ Choice Band  
Ability: Swift Swim  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Liquidation  
- Close Combat  
- Flip Turn  
- Psychic Fangs  

Thundurus-Therian (M) @ Heavy-Duty Boots  
Ability: Volt Absorb  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Nasty Plot  
- Focus Blast  
- Thunder  
- Sludge Wave  

Volcanion @ Heavy-Duty Boots  
Ability: Water Absorb  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Steam Eruption  
- Flamethrower  
- Earth Power  
- Sludge Wave