Hydreigon @ Assault Vest  
Ability: Levitate  
Tera Type: Poison  
EVs: 4 HP / 252 Def / 252 SpD  
- Snarl  
- Hyper Voice  
- Heat Wave  
- Tera Blast  

Gyarados @ Heavy-Duty Boots  
Ability: Intimidate  
Tera Type: Water  
EVs: 252 HP / 252 Spe  
- Icy Wind  
- Chilling Water  
- Bulldoze  
- Roar  

Heatran @ Choice Specs  
Ability: Flash Fire  
Tera Type: Fire  
EVs: 252 HP / 252 SpA / 4 SpD  
Modest Nature  
IVs: 0 Atk  
- Earth Power  
- Flash Cannon  
- Burning Jealousy  
- Lava Plume  

Slither Wing @ Choice Band  
Ability: Protosynthesis  
Tera Type: Bug  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Close Combat  
- Dual Wingbeat  
- Leech Life  
- Earthquake  

Mew @ Heavy-Duty Boots  
Ability: Synchronize  
Tera Type: Psychic  
EVs: 252 HP / 4 Def / 252 Spe  
Careful Nature  
IVs: 0 Atk  
- Encore  
- Life Dew  
- Helping Hand  
- Super Fang  

Thundurus (M) @ Mental Herb  
Ability: Prankster  
Tera Type: Electric  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Volt Switch  
- Sunny Day  
- Thunder Wave  
- Taunt