Ho-Oh @ Choice Band  
Ability: Regenerator  
EVs: 248 HP / 208 Atk / 52 SpD  
Adamant Nature  
- Sacred Fire  
- Brave Bird  
- Earthquake  
- Toxic  

Diancie-Mega @ Diancite  
Ability: Magic Bounce  
EVs: 24 Atk / 232 SpA / 252 Spe  
Naive Nature  
- Moonblast  
- Diamond Storm  
- Earth Power  
- Stealth Rock  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Eruption  
- Earth Power  
- Hidden Power [Ice]  
- Solar Beam  

Arceus @ Chople Berry  
Ability: Multitype  
EVs: 240 HP / 252 Atk / 16 Spe  
Adamant Nature  
- Swords Dance  
- Extreme Speed  
- Shadow Claw  
- Recover  

Giratina-Origin @ Griseous Orb  
Ability: Levitate  
EVs: 248 HP / 180 SpA / 52 SpD / 28 Spe  
Modest Nature  
- Defog  
- Hex  
- Dragon Pulse  
- Thunder Wave  

Necrozma-Dusk-Mane @ Solganium Z  
Ability: Prism Armor  
EVs: 252 HP / 4 Atk / 252 SpD  
Careful Nature  
- Swords Dance  
- Sunsteel Strike  
- Earthquake  
- Morning Sun