Jolteon @ Choice Specs  
Ability: Quick Feet  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Volt Switch  
- Thunderbolt  
- Hidden Power [Ice]  
- Shadow Ball  

Tapu Koko @ Choice Scarf  
Ability: Electric Surge  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Defog  
- Thunderbolt  
- U-turn  
- Hidden Power [Fire]  

Magearna @ Assault Vest  
Ability: Soul-Heart  
EVs: 248 HP / 28 Def / 232 SpD  
Sassy Nature  
- Fleur Cannon  
- Volt Switch  
- Iron Head  
- Hidden Power [Fire]  

Landorus-Therian @ Yache Berry  
Ability: Intimidate  
EVs: 128 HP / 244 Def / 136 Spe  
Impish Nature  
- Stealth Rock  
- Earthquake  
- U-turn  
- Hidden Power [Ice]  

Tangrowth @ Assault Vest  
Ability: Regenerator  
EVs: 248 HP / 28 Def / 232 SpD  
Sassy Nature  
- Knock Off  
- Hidden Power [Ice]  
- Giga Drain  
- Earthquake  

Gyarados-Mega @ Gyaradosite  
Ability: Intimidate  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Dance  
- Ice Fang  
- Crunch  
- Waterfall