Hydreigon @ Choice Specs  
Ability: Levitate  
EVs: 8 HP / 220 SpA / 28 SpD / 252 Spe  
Modest Nature  
- Dark Pulse  
- Draco Meteor  
- Flash Cannon  
- U-turn  

Melmetal @ Assault Vest  
Ability: Iron Fist  
EVs: 252 Atk / 180 SpD / 76 Spe  
Adamant Nature  
- Double Iron Bash  
- Thunder Punch  
- Ice Punch  
- Superpower  

Landorus-Therian (M) @ Rocky Helmet  
Ability: Intimidate  
EVs: 252 HP / 240 Def / 16 Spe  
Impish Nature  
- Stealth Rock  
- Earthquake  
- U-turn  
- Toxic  

Tapu Fini @ Choice Scarf  
Ability: Misty Surge  
EVs: 248 HP / 40 SpA / 220 Spe  
Timid Nature  
IVs: 0 Atk  
- Surf  
- Moonblast  
- Trick  
- Defog  

Diancie-Mega @ Diancite  
Ability: Magic Bounce  
EVs: 12 Atk / 244 SpA / 252 Spe  
Hasty Nature  
- Diamond Storm  
- Moonblast  
- Earth Power  
- Mystical Fire  

Volcarona @ Firium Z  
Ability: Flame Body  
EVs: 40 HP / 252 SpA / 216 Spe  
Timid Nature  
IVs: 0 Atk  
- Quiver Dance  
- Flamethrower  
- Hidden Power [Ground]  
- Roost