Dialga @ Life Orb  
Ability: Telepathy  
EVs: 252 HP / 4 Def / 252 SpA  
Quiet Nature  
- Protect  
- Trick Room  
- Flash Cannon  
- Earth Power  

Gastrodon @ Leftovers  
Ability: Storm Drain  
Level: 50  
EVs: 148 HP / 92 Def / 252 SpA / 12 SpD  
Bold Nature  
IVs: 3 Atk / 0 Spe  
- Protect  
- Earth Power  
- Yawn  
- Ice Beam  

Porygon2 @ Eviolite  
Ability: Download  
EVs: 252 HP / 252 Def / 4 SpD  
Calm Nature  
IVs: 0 Atk / 0 Spe  
- Trick Room  
- Recover  
- Eerie Impulse  
- Ice Beam  

Groudon @ Assault Vest  
Ability: Drought  
Shiny: Yes  
EVs: 164 HP / 204 Atk / 28 Def / 108 SpD / 4 Spe  
Adamant Nature  
- Precipice Blades  
- Rock Slide  
- Fire Punch  
- Earthquake  

Rillaboom-Gmax @ Miracle Seed  
Ability: Grassy Surge  
EVs: 196 Atk / 164 Def / 148 Spe  
Adamant Nature  
- Fake Out  
- Grassy Glide  
- Knock Off  
- High Horsepower  

Grimmsnarl @ Light Clay  
Ability: Prankster  
Gigantamax: Yes  
EVs: 252 HP / 128 Def / 128 SpD  
Impish Nature  
- Light Screen  
- Reflect  
- Sucker Punch  
- Spirit Break