Gliscor @ Toxic Orb  
Ability: Poison Heal
Tera Type: Ground  
EVs: 244 HP / 12 Def / 252 SpD  
Careful Nature  
- Earthquake  
- Spikes  
- Protect  
- Toxic

Gliscor is prob the best Thundurus check in the tier, with good sp. def bulk, longetivity, and the ability to not worry about knock off -> u-turn to wear it down it allows it to just stand its ground and take it on every day of the week