Grimmsnarl @ Light Clay  
Ability: Prankster  
Gigantamax: Yes  
EVs: 252 HP / 132 Def / 124 SpD  
Careful Nature  
- Light Screen  
- Reflect  
- Sucker Punch  
- Taunt  

Groudon @ Sitrus Berry  
Ability: Drought  
EVs: 252 HP / 240 Atk / 16 Spe  
Adamant Nature  
- Stealth Rock  
- Precipice Blades  
- Stone Edge  
- Thunder Wave  

Venusaur @ Focus Sash  
Ability: Chlorophyll  
Shiny: Yes  
Gigantamax: Yes  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Sleep Powder  
- Leaf Storm  
- Sludge Bomb  
- Earth Power  

Ho-Oh @ Life Orb  
Ability: Regenerator  
EVs: 184 HP / 252 Atk / 72 Spe  
Adamant Nature  
- Tailwind  
- Flare Blitz  
- Brave Bird  
- Protect  

Zacian-Crowned @ Rusted Sword  
Ability: Intrepid Sword  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Behemoth Blade  
- Wild Charge  
- Play Rough  
- Protect  

Calyrex-Shadow @ Focus Sash  
Ability: As One (Spectrier)  
EVs: 4 HP / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Imprison  
- Trick Room  
- Astral Barrage  
- Protect