Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 124 Atk / 200 SpD / 184 Spe  
Jolly Nature  
- Knock Off  
- Roost  
- Defog  
- U-turn  

Eternatus @ Heavy-Duty Boots  
Ability: Pressure  
EVs: 72 HP / 252 SpA / 184 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Recover  
- Flamethrower  
- Sludge Bomb  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 252 HP / 204 Def / 52 Spe  
Impish Nature  
- Sunsteel Strike  
- Morning Sun  
- Knock Off  
- Swords Dance  

Ferrothorn @ Leftovers  
Ability: Iron Barbs  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Leech Seed  
- Protect  
- Spikes  
- Knock Off  

Groudon @ Leftovers  
Ability: Drought  
EVs: 240 HP / 96 Atk / 144 Def / 28 Spe  
Impish Nature  
- Swords Dance  
- Precipice Blades  
- Stone Edge  
- Stealth Rock  

Marshadow @ Choice Band  
Ability: Technician  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Poltergeist  
- Close Combat  
- Shadow Sneak  
- Spectral Thief