Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 16 Atk / 128 Def / 116 SpD  
Careful Nature  
IVs: 17 Spe  
- U-turn  
- Knock Off  
- Roost  
- Defog  

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

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 204 HP / 228 Atk / 76 Spe  
Adamant Nature  
- Sacred Fire  
- Substitute  
- Earthquake  
- Recover  

Eternatus @ Heavy-Duty Boots  
Ability: Pressure  
EVs: 252 HP / 168 SpD / 88 Spe  
Calm Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Recover  
- Mystical Fire  
- Toxic  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 252 HP / 252 Def / 4 Spe  
Impish Nature  
- Moonlight  
- Sunsteel Strike  
- Earthquake  
- Swords Dance  

Zekrom @ Life Orb  
Ability: Teravolt  
EVs: 252 Atk / 52 SpA / 204 Spe  
Naive Nature  
- Roost  
- Scale Shot  
- Bolt Strike  
- Weather Ball