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

Groudon @ Leftovers  
Ability: Drought  
EVs: 252 HP / 240 Def / 16 Spe  
Impish Nature  
- Earthquake  
- Rock Slide  
- Stealth Rock  
- Thunder Wave  

Zacian-Crowned @ Rusted Sword  
Ability: Intrepid Sword  
EVs: 4 HP / 252 Atk / 252 Spe  
Adamant Nature  
- Behemoth Blade  
- Close Combat  
- Assurance  
- Wild Charge  

Quagsire @ Rocky Helmet  
Ability: Unaware  
EVs: 252 HP / 252 Def / 4 SpA  
Bold Nature  
IVs: 0 Atk  
- Scald  
- Haze  
- Recover  
- Toxic  

Reshiram @ Heavy-Duty Boots  
Ability: Turboblaze  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Dance  
- Flare Blitz  
- Outrage  
- Dual Wingbeat  

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