Zygarde-Complete @ Steelium Z  
Ability: Power Construct  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
IVs: 30 HP  
- Dragon Dance  
- Thousand Arrows  
- Iron Tail  
- Substitute  

Toxapex @ Shed Shell  
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Toxic Spikes  
- Scald  
- Haze  
- Recover  

Ho-Oh @ Life Orb  
Ability: Regenerator  
EVs: 104 HP / 252 Atk / 152 Spe  
Adamant Nature  
- Sacred Fire  
- Brave Bird  
- Recover  
- Hidden Power [Ice]  

Xerneas @ Choice Scarf  
Ability: Fairy Aura  
EVs: 4 Def / 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Moonblast  
- Defog  
- Aromatherapy  
- Toxic  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Stealth Rock  
- Moonlight  
- Toxic  
- Sunsteel Strike  

Kyogre-Primal @ Blue Orb  
Ability: Primordial Sea  
EVs: 32 HP / 236 Atk / 64 Def / 176 Spe  
Adamant Nature  
- Liquidation  
- Earthquake  
- Ice Beam  
- Thunder