Gyarados-Mega @ Gyaradosite  
Ability: Intimidate  
EVs: 248 HP / 44 Atk / 216 Spe  
Adamant Nature  
- Dragon Dance  
- Waterfall  
- Crunch  
- Outrage  

Serperior @ Leftovers  
Ability: Contrary  
EVs: 184 HP / 24 Def / 4 SpD / 232 Spe  
Timid Nature  
IVs: 0 Atk  
- Protect  
- Substitute  
- Leaf Storm  
- Leech Seed  

Dragonite @ Choice Scarf  
Ability: Multiscale  
EVs: 4 HP / 252 Atk / 252 Spe  
Adamant Nature  
- Outrage  
- Fire Punch  
- Iron Head  
- Fly