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

Mew @ Mental Herb  
Ability: Synchronize  
EVs: 252 HP / 4 Def / 252 Spe  
Jolly Nature  
- Thunder Wave  
- Stealth Rock  
- Explosion  
- Taunt  

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

Cloyster @ Focus Sash  
Ability: Skill Link  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Shell Smash  
- Icicle Spear  
- Rapid Spin  
- Toxic Spikes  

Dragonite @ Choice Band  
Ability: Multiscale  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Outrage  
- Extreme Speed  
- Superpower  
- Iron Head  

Thundurus-Therian (M) @ Leftovers  
Ability: Volt Absorb  
EVs: 24 HP / 20 Def / 212 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk / 30 Def  
- Nasty Plot  
- Focus Blast  
- Thunderbolt  
- Hidden Power [Ice]