Klefki @ Light Clay  
Ability: Prankster  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Light Screen  
- Reflect  
- Spikes  
- Thunder Wave  

Cloyster @ King's Rock  
Ability: Skill Link  
EVs: 252 Atk / 4 SpD / 252 Spe  
Naive Nature  
- Shell Smash  
- Icicle Spear  
- Rock Blast  
- Hydro Pump  

Slurpuff @ Sitrus Berry  
Ability: Unburden  
EVs: 44 HP / 252 Atk / 4 SpD / 208 Spe  
Jolly Nature  
- Belly Drum  
- Drain Punch  
- Play Rough  
- Facade  

Thundurus (M) @ Heavy-Duty Boots  
Ability: Defiant  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Nasty Plot  
- Thunderbolt  
- Focus Blast  
- Psychic  

Necrozma @ Weakness Policy  
Ability: Prism Armor  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Dance  
- Photon Geyser  
- Earthquake  
- X-Scissor  

Flygon @ Life Orb  
Ability: Levitate  
EVs: 252 Atk / 60 Def / 196 Spe  
Adamant Nature  
- Dragon Dance  
- Earthquake  
- Stone Edge  
- Iron Tail