Calyrex-Ice @ Leftovers  
Ability: As One (Glastrier)  
EVs: 252 HP / 252 Atk / 4 Def  
Brave Nature  
IVs: 0 Spe  
- Swords Dance  
- Glacial Lance  
- High Horsepower  
- Trick Room  

Groudon @ Lum Berry  
Ability: Drought  
EVs: 188 HP / 252 Atk / 68 Spe  
Adamant Nature  
- Shadow Claw  
- Swords Dance  
- Precipice Blades  
- Stone Edge  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 248 HP / 252 Def / 8 Spe  
Impish Nature  
- Morning Sun  
- Sunsteel Strike  
- Thunder Wave  
- Stealth Rock  

Eternatus @ Black Sludge  
Ability: Pressure  
EVs: 252 HP / 212 SpD / 44 Spe  
Calm Nature  
IVs: 0 Atk  
- Recover  
- Dynamax Cannon  
- Flamethrower  
- Toxic  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 8 Def / 252 SpD  
Careful Nature  
IVs: 29 Spe  
- Knock Off  
- Roost  
- Defog  
- U-turn  

Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 248 HP / 8 Atk / 252 Def  
Impish Nature  
IVs: 30 Atk  
- Transform