Dialga @ Shuca Berry  
Ability: Pressure  
EVs: 120 SpA / 136 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Stealth Rock  
- Draco Meteor  
- Earth Power  
- Thunder  

Magearna @ Leftovers  
Ability: Soul-Heart  
EVs: 252 HP / 4 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Pain Split  
- Heart Swap  
- Fleur Cannon  
- Thunder Wave  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 Atk / 100 SpD / 156 Spe  
Adamant Nature  
- Rock Polish  
- Precipice Blades  
- Stone Edge  
- Swords Dance  

Ho-Oh @ Choice Band  
Ability: Regenerator  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Earthquake  
- Sacred Fire  
- Brave Bird  
- Toxic  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
EVs: 248 HP / 64 Def / 196 Spe  
Timid Nature  
IVs: 0 Atk  
- Recover  
- Defog  
- Judgment  
- Will-O-Wisp  

Necrozma-Dawn-Wings @ Kasib Berry  
Ability: Prism Armor  
EVs: 248 HP / 220 Def / 40 SpA  
Bold Nature  
IVs: 0 Atk  
- Calm Mind  
- Moongeist Beam  
- Psychic  
- Morning Sun