Calyrex-Ice @ Heavy-Duty Boots  
Ability: As One (Glastrier)  
Tera Type: Fighting  
EVs: 248 HP / 252 Atk / 8 SpD  
Brave Nature  
IVs: 0 Spe  
- Close Combat  
- Glacial Lance  
- Trick Room  
- Swords Dance  

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

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
Tera Type: Grass  
EVs: 248 HP / 208 Def / 52 SpD  
Impish Nature  
- Sacred Fire  
- Toxic  
- Defog  
- Whirlwind  

Xerneas @ Power Herb  
Ability: Fairy Aura  
Tera Type: Electric  
EVs: 48 HP / 24 Def / 252 SpA / 184 Spe  
Timid Nature  
IVs: 0 Atk  
- Geomancy  
- Moonblast  
- Thunderbolt  
- Substitute  

Koraidon @ Choice Scarf  
Ability: Orichalcum Pulse  
Tera Type: Fire  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Close Combat  
- Dragon Claw  
- U-turn  
- Flare Blitz  

Zygarde @ Leftovers  
Ability: Power Construct  
Shiny: Yes  
Tera Type: Fairy  
EVs: 248 HP / 252 Def / 8 SpD  
Impish Nature  
- Coil  
- Glare  
- Thousand Arrows  
- Rest