Groudon @ Leftovers  
Ability: Drought  
EVs: 144 HP / 156 Atk / 132 Def / 76 Spe  
Adamant Nature  
- Stealth Rock
- Swords Dance 
- Precipice Blades  
- Stone Edge  

Eternatus @ Leftovers  
Ability: Pressure  
EVs: 252 HP / 164 SpD / 92 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Mystical Fire  
- Toxic  
- Recover  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura   
EVs: 72 HP / 252 SpD / 184 Spe  
Timid Nature  
IVs: 0 Atk  
- Foul Play  
- Snarl  
- Defog  
- Roost  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- Sunsteel Strike
- Knock Off  
- Thunder Wave  
- Moonlight  

Xerneas @ Power Herb  
Ability: Fairy Aura   
EVs: 4 Def / 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Geomancy  
- Moonblast  
- Thunder  
- Substitute  

Zacian-Crowned @ Rusted Sword  
Ability: Intrepid Sword  
EVs: 252 Atk / 184 SpD / 72 Spe  
Adamant Nature  
- Behemoth Blade  
- Close Combat 
- Wild Charge  
- Assurance