Groudon @ Leftovers  
Ability: Drought  
EVs: 156 HP / 252 Atk / 100 Spe  
Impish Nature  
- Precipice Blades  
- Bulk Up  
- Dragon Tail  
- Substitute  

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

Necrozma-Dusk-Mane @ Shed Shell  
Ability: Prism Armor  
EVs: 252 HP / 224 SpD / 32 Spe  
Careful Nature  
- Stealth Rock  
- Moonlight  
- Iron Head  
- Thunder Wave  

Eternatus @ Heavy-Duty Boots  
Ability: Pressure  
EVs: 252 HP / 40 Def / 216 Spe  
Timid Nature  
IVs: 0 Atk  
- Recover  
- Toxic  
- Flamethrower  
- Dynamax Cannon  

Ferrothorn @ Leftovers  
Ability: Iron Barbs  
EVs: 252 HP / 164 Def / 92 SpD  
Impish Nature  
- Leech Seed  
- Spikes  
- Knock Off  
- Curse  

Landorus-Therian (M) @ Leftovers  
Ability: Intimidate  
EVs: 124 HP / 252 Atk / 132 Spe  
Adamant Nature  
- Earthquake  
- Swords Dance  
- Stone Edge  
- Rock Polish