Thwackey @ Terrain Extender  
Ability: Grassy Surge  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Taunt  
- Knock Off  
- U-turn  
- Grassy Glide  

Diancie @ Power Herb  
Ability: Clear Body  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Earth Power  
- Meteor Beam  
- Moonblast  
- Terrain Pulse