Marshadow @ Life Orb  
Ability: Technician  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Bulk Up  
- Shadow Sneak  
- Low Kick  
- Spectral Thief  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 72 Def / 188 SpD  
Careful Nature  
- Knock Off  
- U-turn  
- Defog  
- Roost  

Eternatus @ Heavy-Duty Boots  
Ability: Pressure  
EVs: 160 HP / 252 SpD / 96 Spe  
Timid Nature  
- Recover  
- Toxic  
- Dragon Tail  
- Dynamax Cannon  

Necrozma-Dusk-Mane @ Heavy-Duty Boots  
Ability: Prism Armor  
EVs: 252 HP / 136 Def / 120 Spe  
Impish Nature  
- Stealth Rock  
- Iron Head  
- Thunder Wave  
- Morning Sun  

Groudon @ Leftovers  
Ability: Drought  
EVs: 252 HP / 240 Def / 16 Spe  
Impish Nature  
- Precipice Blades  
- Stone Edge  
- Roar  
- Toxic  

Ho-Oh @ Choice Band  
Ability: Regenerator  
EVs: 248 HP / 192 Atk / 52 SpD / 16 Spe  
Adamant Nature  
- Sacred Fire  
- Brave Bird  
- Earthquake  
- Flare Blitz