Eternatus @ Ability Shield  
Ability: Regenerator  
Tera Type: Ghost  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Shed Tail  
- Revival Blessing  
- Taunt  
- Stone Axe  

Groudon-Primal @ Lum Berry  
Ability: Neutralizing Gas  
Tera Type: Water  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Shell Smash  
- Bitter Blade  
- Headlong Rush  
- Magic Room  

Rayquaza-Mega @ Heavy-Duty Boots  
Ability: Neutralizing Gas  
Tera Type: Ghost  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Dragon Ascent  
- Shell Smash  
- Magic Room  
- Spore  

Audino-Mega @ Ability Shield  
Ability: Good as Gold  
Tera Type: Water  
EVs: 248 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Haze  
- Soft-Boiled  
- Baton Pass  
- Alluring Voice  

Arceus-Water @ Ability Shield  
Ability: Wonder Guard  
Tera Type: Steel  
EVs: 248 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Tidy Up  
- Revival Blessing  
- Steam Eruption  
- Perish Song  

Zacian @ Leppa Berry  
Ability: Wonder Guard  
Tera Type: Electric  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Magical Torque  
- Recycle  
- Revival Blessing  
- Lunar Dance