Marshadow @ Life Orb  
Ability: Adaptability  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Shadow Sneak  
- Spectral Thief  
- Bulk Up  
- Close Combat  

Xerneas @ Toxic Orb  
Ability: Poison Heal  
EVs: 248 HP / 252 Def / 8 SpA  
Bold Nature  
IVs: 0 Atk  
- Defog  
- Moonblast  
- Protect  
- Thunder Wave  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Flash Fire  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Stealth Rock  
- Morning Sun  
- Knock Off  
- Sunsteel Strike  

Yveltal @ Assault Vest  
Ability: Regenerator  
EVs: 248 HP / 252 Def / 8 SpD  
Sassy Nature  
IVs: 0 Spe  
- Knock Off  
- Rock Slide  
- U-turn  
- Sucker Punch  

Urshifu-Rapid-Strike @ Choice Scarf  
Ability: Primordial Sea  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Surging Strikes  
- U-turn  
- Close Combat  
- Poison Jab  

Eternatus @ Black Sludge  
Ability: Magic Bounce  
EVs: 252 HP / 4 Atk / 208 SpD / 44 Spe  
Gentle Nature  
- Dynamax Cannon  
- Toxic Spikes  
- Recover  
- Dragon Tail