Riolu @ Custap Berry  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 4 Def  
Brave Nature  
IVs: 0 Spe  
- Dig  
- Toxic  
- Copycat  
- Substitute  

Zygarde @ Weakness Policy  
Ability: Power Construct  
EVs: 252 HP / 252 Atk / 4 SpD  
Adamant Nature  
- Coil  
- Thousand Arrows  
- Skitter Smack  
- Rest  

Volcanion @ Choice Specs  
Ability: Water Absorb  
EVs: 252 HP / 100 Def / 140 SpA / 16 Spe  
Modest Nature  
- Overheat  
- Steam Eruption  
- Sludge Wave  
- Fling