Mew @ Leftovers  
Ability: Synchronize  
EVs: 252 HP / 4 Def / 252 Spe  
Timid Nature  
- Knock Off  
- Will-O-Wisp  
- Spikes  
- Soft-Boiled  

Eternatus @ Black Sludge  
Ability: Pressure  
EVs: 240 HP / 252 SpD / 16 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Toxic  
- Flamethrower  
- Recover  

Groudon @ Leftovers  
Ability: Drought  
EVs: 236 HP / 252 Def / 20 Spe  
Impish Nature  
- Stealth Rock  
- Stone Edge  
- Thunder Wave  
- Precipice Blades  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 136 HP / 252 Atk / 120 Spe  
Adamant Nature  
- Dragon Dance  
- Sunsteel Strike  
- Stone Edge  
- Morning Sun  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Roost  
- Knock Off  
- U-turn  
- Defog  

Zekrom @ Life Orb  
Ability: Teravolt  
EVs: 252 Atk / 4 SpA / 252 Spe  
Naive Nature  
- Bolt Strike  
- Dragon Dance  
- Draco Meteor  
- Roost