Rayquaza-Mega @ Life Orb  
Ability: Delta Stream  
EVs: 252 Atk / 4 SpA / 252 Spe  
Naughty Nature  
- Draco Meteor  
- Extreme Speed  
- V-create  
- Dragon Ascent  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- Sunsteel Strike  
- Morning Sun  
- Toxic  
- Knock Off  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 248 HP / 8 Def / 252 SpD  
Sassy Nature  
- Rest  
- Stone Edge  
- Earthquake  
- Stealth Rock  

Chansey (F) @ Eviolite  
Ability: Natural Cure  
EVs: 4 HP / 252 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Soft-Boiled  
- Toxic  
- Confide  
- Heal Bell  

Zygarde @ Leftovers  
Ability: Power Construct  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- Coil  
- Rest  
- Thousand Arrows  
- Glare  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 200 Def / 60 SpD  
Impish Nature  
- Defog  
- Toxic  
- Sacred Fire  
- Whirlwind