Volcarona @ Buginium Z  
Ability: Swarm  
EVs: 80 HP / 4 Def / 200 SpA / 4 SpD / 220 Spe  
Timid Nature  
IVs: 0 Atk  
- Heat Wave  
- Bug Buzz  
- Quiver Dance  
- Protect  

Persian-Alola @ Mago Berry  
Ability: Fur Coat  
EVs: 228 HP / 8 Def / 48 SpD / 224 Spe  
Jolly Nature  
- Fake Out  
- Foul Play  
- Taunt  
- Parting Shot  

Metagross-Mega @ Metagrossite  
Ability: Clear Body  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Iron Head  
- Ice Punch  
- Stomping Tantrum  
- Protect  

Tapu Fini @ Wiki Berry  
Ability: Misty Surge  
EVs: 252 HP / 32 Def / 164 SpA / 60 Spe  
Bold Nature  
IVs: 0 Atk  
- Muddy Water  
- Moonblast  
- Calm Mind  
- Protect  

Zapdos @ Misty Seed  
Ability: Static  
EVs: 244 HP / 80 Def / 16 SpA / 104 SpD / 64 Spe  
Modest Nature  
IVs: 0 Atk  
- Thunderbolt  
- Heat Wave  
- Tailwind  
- Roost  

Landorus-Therian @ Aguav Berry  
Ability: Intimidate  
EVs: 220 HP / 32 Atk / 24 Def / 136 SpA / 24 SpD / 72 Spe  
Mild Nature  
- Earth Power  
- Rock Tomb  
- U-turn  
- Stealth Rock  

Spread notes:
Volcarona takes a Deo-A Psycho Boost while still outspeeding Kyurem-B and KOing Incineroar with Savage Spin-Out at either +1 or in Swarm
Alolan Persian takes <50% from Mega Metagross's Iron Head, outspeeds Tornadus, and has a dump in SpD to ensure survival of Zard Y Heat Wave
Landorus-T has 32 Atk to OHKO Zard Y with Rock Tomb and takes <50% from -1 Zard Y Heat Wave, which is useful thanks to Parting Shot. It also outspeeds -1 Torn so that you can safely Rock Tomb it and has enough SpA to OHKO 0/64 Kartana with Earth Power