Ditto @ Choice Scarf  
Ability: Imposter  
Tera Type: Ghost  
EVs: 248 HP / 8 Atk / 252 Def  
Relaxed Nature  
IVs: 0 Spe  
- Transform  

Zacian-Crowned @ Rusted Sword  
Ability: Intrepid Sword  
Tera Type: Fighting  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Swords Dance  
- Play Rough  
- Wild Charge  
- Close Combat  

Eternatus @ Choice Specs  
Ability: Pressure  
Tera Type: Dragon  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Dynamax Cannon  
- Sludge Bomb  
- Fire Blast  
- Draco Meteor  

Groudon @ Red Orb  
Ability: Drought  
EVs: 248 HP / 112 Atk / 140 Def / 8 SpD  
Impish Nature  
- Spikes  
- Swords Dance  
- Precipice Blades  
- Stone Edge  

Necrozma-Dusk-Mane @ Ultranecrozium Z  
Ability: Prism Armor  
EVs: 16 HP / 24 Def / 244 SpA / 224 Spe  
Naive Nature  
IVs: 4 Atk  
- Stealth Rock  
- Photon Geyser  
- Earth Power  
- Stone Edge  

Giratina-Origin @ Griseous Core  
Ability: Levitate  
Tera Type: Poison  
EVs: 248 HP / 68 Atk / 192 Def  
Impish Nature  
- Poltergeist  
- Dragon Tail  
- Defog  
- Toxic