Genesect @ Choice Scarf  
Ability: Download  
EVs: 248 Atk / 8 SpA / 252 Spe  
Hasty Nature  
- U-turn  
- Iron Head  
- Ice Beam  
- Explosion  

Tapu Koko @ Electrium Z  
Ability: Electric Surge  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
- Thunder  
- Nature's Madness  
- Taunt  
- U-turn  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 252 HP / 64 Def / 124 Spe  
Bold Nature  
IVs: 0 Atk  
- Recover  
- Toxic  
- Defog  
- Ice Beam  

Groudon @ Red Orb  
Ability: Drought  
EVs: 252 HP / 4 Def / 252 SpD  
Sassy Nature  
- Stealth Rock  
- Precipice Blades  
- Overheat  
- Toxic  

Marshadow @ Life Orb  
Ability: Technician  
EVs: 252 Atk / 4 SpA / 252 Spe  
Hasty Nature  
- Spectral Thief  
- Shadow Sneak  
- Close Combat  
- Hidden Power [Ice]  

Yveltal @ Choice Specs  
Ability: Dark Aura  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
- Dark Pulse  
- Oblivion Wing  
- U-turn  
- Heat Wave