Melmetal @ Choice Band  
Ability: Iron Fist  
EVs: 252 HP / 252 Atk / 4 SpD  
Brave Nature  
IVs: 0 Spe  
- Double Iron Bash  
- Ice Punch  
- Rock Slide  
- Superpower  

Dracovish @ Choice Band  
Ability: Strong Jaw  
EVs: 248 HP / 252 Atk / 8 SpD  
Adamant Nature  
IVs: 22 Spe  
- Fishious Rend  
- Earthquake  
- Crunch  
- Low Kick  

Necrozma-Dusk-Mane @ Weakness Policy  
Ability: Prism Armor  
EVs: 252 HP / 252 Atk / 4 SpD  
Brave Nature  
IVs: 0 Spe  
- Trick Room  
- Sunsteel Strike  
- Earthquake  
- Rock Blast  

Magearna @ Occa Berry  
Ability: Soul-Heart  
EVs: 252 HP / 134 Def / 122 SpD  
Sassy Nature  
IVs: 0 Spe  
- Fleur Cannon  
- Trick Room  
- Explosion  
- Heart Swap  

Stakataka @ Air Balloon  
Ability: Beast Boost  
EVs: 252 HP / 252 Atk / 4 SpD  
Lonely Nature  
IVs: 15 Def / 0 Spe  
- Trick Room  
- Rock Blast  
- Earthquake  
- Gyro Ball  

Rayquaza-Mega @ Choice Scarf  
Ability: Delta Stream  
EVs: 252 Atk / 4 SpA / 252 Spe  
Hasty Nature  
- Surf  
- Dragon Ascent  
- Draco Meteor  
- V-create