Necrozma @ Choice Specs  
Ability: Prism Armor  
EVs: 248 HP / 28 Def / 208 SpA / 24 SpD  
Modest Nature  
- Prismatic Laser  
- Photon Geyser  
- Heat Wave  
- Hidden Power [Ice]  

Charizard-Mega-X @ Charizardite X  
Ability: Tough Claws  
EVs: 112 HP / 76 Atk / 104 SpD / 216 Spe  
Adamant Nature  
- Substitute  
- Flare Blitz  
- Outrage  
- Belly Drum  

Celesteela @ Steelium Z  
Ability: Beast Boost  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Leech Seed  
- Protect  
- Substitute  
- Heavy Slam