Raichu-Alola @ Life Orb  
Ability: Surge Surfer  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Nasty Plot  
- Rising Voltage  
- Disarming Voice  
- Hidden Power [Ground]  

Tapu Koko @ Terrain Extender  
Ability: Electric Surge  
EVs: 248 HP / 252 SpD / 8 Spe  
Calm Nature  
- U-turn  
- Thunderbolt  
- Defog  
- Roost  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 248 HP / 136 Def / 124 Spe  
Bold Nature  
IVs: 0 Atk  
- Ice Beam  
- Toxic  
- Refresh  
- Recover  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 252 HP / 252 Def / 4 Spe  
Impish Nature  
- Sunsteel Strike  
- Knock Off  
- Stealth Rock  
- Morning Sun  

Rayquaza-Mega @ Life Orb  
Ability: Delta Stream  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Dragon Dance  
- Dragon Ascent  
- Extreme Speed  
- V-create  

Mewtwo @ Light Clay  
Ability: Pressure  
EVs: 248 HP / 8 Atk / 252 Spe  
Jolly Nature  
- Reflect  
- Light Screen  
- Taunt  
- Self-Destruct