Diancie-Mega @ Diancite  
Ability: Magic Bounce  
EVs: 252 Spe  
Naive Nature  
IVs: 0 Atk  
- Stealth Rock  

Whimsicott  
Ability: Prankster  
IVs: 0 Atk  
- Memento  

Gyarados @ Leftovers  
Ability: Moxie  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Dragon Dance  
- Waterfall  
- Earthquake  
- Crunch