Volcarona @ Life Orb  
Ability: Swarm  
Tera Type: Bug  
EVs: 144 HP / 112 Def / 20 SpA / 232 Spe  
Modest Nature  
IVs: 0 Atk  
- Quiver Dance  
- Bug Buzz  
- Overheat  
- Substitute  

Marshtomp @ Eviolite  
Ability: Torrent  
Tera Type: Water  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Earthquake  
- Mirror Coat  
- Counter  
- Curse  

Regidrago @ Assault Vest  
Ability: Dragon's Maw  
Tera Type: Dragon  
EVs: 4 HP / 64 Atk / 192 Def / 68 SpA / 164 SpD / 16 Spe  
Modest Nature  
- Scale Shot  
- Draco Meteor  
- Outrage  
- Breaking Swipe