Arceus @ Covert Cloak  
Ability: Multitype  
Tera Type: Water  
EVs: 248 HP / 76 Def / 8 SpA / 32 SpD / 144 Spe  
Timid Nature  
IVs: 0 Atk  
- Tera Blast  
- Taunt  
- Calm Mind  
- Recover  

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

Alomomola @ Heavy-Duty Boots  
Ability: Regenerator  
Tera Type: Dark  
EVs: 232 HP / 252 Def / 24 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Flip Turn  
- Toxic  
- Wish  
- Protect  

Marshadow @ Choice Band  
Ability: Technician  
Tera Type: Ghost  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Shadow Sneak  
- Spectral Thief  
- Poltergeist  
- Close Combat  

Giratina-Origin @ Griseous Core  
Ability: Levitate  
Tera Type: Poison  
EVs: 248 HP / 152 Def / 8 SpA / 88 SpD / 12 Spe  
Modest Nature  
IVs: 0 Atk  
- Hex  
- Draco Meteor  
- Will-O-Wisp  
- Defog  

Ferrothorn @ Leftovers  
Ability: Iron Barbs  
Tera Type: Poison  
EVs: 252 HP / 4 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Power Whip  
- Knock Off  
- Leech Seed  
- Stealth Rock