Necrozma-Dusk-Mane @ Weakness Policy  
Ability: Prism Armor  
EVs: 252 HP / 144 Atk / 112 SpD  
Brave Nature  
IVs: 25 Spe  
- Sunsteel Strike  
- Earthquake  
- Trick Room  
- Protect  

Blastoise @ Safety Goggles  
Ability: Rain Dish  
Gigantamax: Yes  
EVs: 252 HP / 160 Def / 96 SpD  
Sassy Nature  
IVs: 22 Spe  
- Bulldoze  
- Follow Me  
- Fake Out  
- Yawn  

Ho-Oh @ Life Orb  
Ability: Regenerator  
EVs: 180 HP / 252 Atk / 76 Spe  
Adamant Nature  
- Brave Bird  
- Flare Blitz  
- Tailwind  
- Protect  

Zacian-Crowned @ Rusted Sword  
Ability: Intrepid Sword  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
- Behemoth Blade  
- Play Rough  
- Close Combat  
- Protect  

Yveltal @ Assault Vest  
Ability: Dark Aura  
EVs: 252 HP / 72 SpA / 184 Spe  
Timid Nature  
- Foul Play  
- Snarl  
- Sucker Punch  
- Oblivion Wing  

Kyogre @ Wave Incense  
Ability: Drizzle  
EVs: 240 HP / 252 SpA / 16 Spe  
Modest Nature  
IVs: 0 Atk  
- Water Spout  
- Origin Pulse  
- Thunder  
- Protect