Serperior @ Light Clay  
Ability: Contrary  
EVs: 252 HP / 4 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Light Screen  
- Reflect  
- Leaf Storm  
- Taunt  

Gyarados-Mega @ Gyaradosite  
Ability: Mold Breaker  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Dragon Dance  
- Crunch  
- Waterfall  
- Substitute