Mew @ Rocky Helmet  
Ability: Synchronize  
Tera Type: Fairy  
EVs: 248 HP / 180 Def / 80 Spe  
Impish Nature  
- Spikes  
- Toxic  
- Knock Off  
- U-turn  

Thundurus @ Heavy-Duty Boots  
Ability: Prankster  
Tera Type: Steel  
EVs: 116 HP / 20 Def / 120 SpA / 252 Spe  
Timid Nature  
- Thunderbolt  
- U-turn  
- Knock Off  
- Grass Knot  

Avalugg @ Heavy-Duty Boots  
Ability: Sturdy  
Tera Type: Ghost  
EVs: 248 HP / 252 SpD / 8 Spe  
Careful Nature  
- Ice Spinner  
- Earthquake  
- Rapid Spin  
- Recover  

Umbreon @ Leftovers  
Ability: Synchronize  
Tera Type: Poison  
EVs: 248 HP / 8 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Foul Play  
- Toxic  
- Wish  
- Protect  

Basculegion (M) @ Mystic Water  
Ability: Adaptability  
Tera Type: Water  
EVs: 252 Atk / 4 SpA / 252 Spe  
Naughty Nature  
- Wave Crash  
- Shadow Ball  
- Flip Turn  
- Aqua Jet  

Registeel @ Leftovers  
Ability: Clear Body  
Tera Type: Dragon  
EVs: 248 HP / 8 Def / 252 SpD  
Careful Nature  
- Earthquake  
- Heavy Slam  
- Stealth Rock  
- Thunder Wave