Thundurus (M) @ Leftovers  / Life Orb
Ability: Prankster  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Nasty Plot  
- Thunderbolt  
- Focus Blast  / Hidden Power Ice / Grass Knot
- Hidden Power [Ice]  / Sludge Wave / Grass Knot / Taunt

Thundurus (M) @ Expert Belt  
Ability: Defiant  
EVs: 60 Atk / 196 SpA / 252 Spe  
Hasty Nature  
- Knock Off  
- Superpower  
- Thunderbolt  
- Hidden Power [Ice]  / Sludge Wave / Grass Knot