Arceus-Dark @ Heavy-Duty Boots  
Ability: Shadow Shield  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Dark Pulse  
- Toxic  
- Recover  
- Roar  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Dauntless Shield  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- Stealth Rock  
- Sunsteel Strike  
- Moonlight  
- Earthquake

Mewtwo @ Life Orb  
Ability: Sheer Force  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Nasty Plot  
- Psychic  
- Shadow Ball  
- Hurricane  

Giratina @ Leftovers  
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Hex  
- Toxic  
- Will-O-Wisp  
- Defog  

Eternatus @ Life Orb  
Ability: Sheer Force  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Sludge Bomb  
- Flamethrower  
- Recover  

Xerneas @ Power Herb  
Ability: Regenerator  
EVs: 4 Def / 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Moonblast  
- Thunder  
- Hidden Power [Fire]  
- Geomancy