Groudon @ Red Orb  
Ability: Desolate Land  
Tera Type: Ground  
EVs: 248 HP / 140 Def / 120 SpD  
Impish Nature  
- Precipice Blades  
- Spikes  
- Toxic  
- Overheat  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
Tera Type: Poison  
EVs: 248 HP / 76 Def / 184 Spe  
Timid Nature  
- Knock Off  
- Toxic  
- Taunt  
- Roost  

Alomomola @ Heavy-Duty Boots  
Ability: Regenerator  
Tera Type: Dark  
EVs: 4 HP / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Flip Turn  
- Toxic  
- Wish  
- Protect  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
Tera Type: Grass  
EVs: 248 HP / 204 Def / 56 SpD  
Impish Nature  
- Sacred Fire  
- Toxic  
- Defog  
- Whirlwind  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
Tera Type: Water  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Judgment  
- Power Gem  
- Recover  

Marshadow @ Choice Band  
Ability: Technician  
Tera Type: Ghost  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Rock Tomb  
- Spectral Thief  
- Shadow Sneak  
- Low Kick