Lead (Dewgong) @ Leftovers / Lum Berry
Ability: Thick Fat  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
- Surf  
- Ice Beam  
- Hidden Power [Grass]  
- Ice Shard / Encore / Protect 

Offensive Sub (Dewgong) @ Leftovers  
Ability: Thick Fat  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 2 Atk / 30 SpA  
- Substitute  
- Surf  
- Ice Beam  
- Hidden Power [Grass] / Toxic / Encore