Dragonite @ Choice Scarf  
Ability: Multiscale  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Rock Slide  
- Superpower  
- Iron Head  
- Ice Punch  

Tapu Fini @ Tapunium Z  
Ability: Misty Surge  
EVs: 248 HP / 52 Def / 20 SpA / 188 Spe  
Bold Nature  
IVs: 0 Atk  
- Nature's Madness  
- Brine  
- Taunt  
- Moonblast  

Charizard-Mega-X @ Charizardite X  
Ability: Tough Claws  
EVs: 72 HP / 36 Atk / 252 SpD / 148 Spe  
Jolly Nature  
- Dragon Dance  
- Outrage  
- Flare Blitz  
- Belly Drum