Mewtwo-Mega-Y @ Mewtwonite Y  
Ability: Pressure  
Tera Type: Psychic  
EVs: 88 Def / 204 SpA / 216 Spe  
Timid Nature  
- Nasty Plot  
- Psystrike  
- Fire Blast  
- Focus Blast  

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

Groudon-Primal @ Red Orb  
Ability: Drought  
Tera Type: Flying  
EVs: 252 HP / 56 Def / 200 SpD  
Relaxed Nature  
- Spikes  
- Precipice Blades  
- Stone Edge  
- Toxic  

Giratina-Origin @ Griseous Core  
Ability: Levitate  
Tera Type: Poison  
EVs: 248 HP / 184 Atk / 76 Spe  
Adamant Nature  
- Poltergeist  
- Dragon Tail  
- Defog  
- Will-O-Wisp