Low kick 
Clodsire @ Heavy-Duty Boots / Black Sludge
Ability: Unaware
Tera Type: Fighting/Water/Poison/Fairy/Steel/Psychic
EVs: 248 HP / 248 SpD / 4 Spe
Careful Nature
- Toxic
- Earthquake
- Recover
- Low Kick
As a stall user, I’m gonna use a stall mon to surprise hydreigon. Hydreigon won’t come in on a toxic, but it can Tera elsewhere and then blindly switch in.
That is where Low Kick comes in.
Clodsire actually has a surprisingly high Attack stat for a defensive mon. Hydreigon is also quite heavy, so low kick will hit it hard. If you absolutely despise hydreigon and want it to cease existing, use Tera fighting to 2HKO it. Or you can use the other Tera types I have seen.
Story:
Since BW OU, Hydreigon always hated stall. Therefore, she wanted to fuck every stall mon she saw. Now it is SV OU and her pure disdain for stall made her run Tera steel for toxic immunity. Then she raided the stall town, bringing terror. Clodsire needed to save the stall town, so he swallowed a low kick TM. Then, he launched a kick at Hydreigon, dealing more than a third of her HP in damage, seeing this, hydreigon fled.

Clodsire @ Heavy-Duty Boots / Black Sludge
Ability: Unaware
Tera Type: Fighting/Water/Poison/Fairy/Steel/Psychic
EVs: 248 HP / 248 SpD / 4 Spe
Careful Nature
- Toxic
- Earthquake
- Recover
- Low Kick
0 Atk Clodsire Low Kick (100 BP) vs. 0 HP / 0 Def Hydreigon: 124-148 (38.1 - 45.5%) -- guaranteed 3HKO after Leftovers recovery
Possible damage amounts: (124, 126, 128, 130, 130, 132, 134, 136, 136, 138, 140, 142, 142, 144, 146, 148)
Possible damage amounts: (124, 126, 128, 130, 130, 132, 134, 136, 136, 138, 140, 142, 142, 144, 146, 148)
As a stall user, I’m gonna use a stall mon to surprise hydreigon. Hydreigon won’t come in on a toxic, but it can Tera elsewhere and then blindly switch in.
That is where Low Kick comes in.
Clodsire actually has a surprisingly high Attack stat for a defensive mon. Hydreigon is also quite heavy, so low kick will hit it hard. If you absolutely despise hydreigon and want it to cease existing, use Tera fighting to 2HKO it. Or you can use the other Tera types I have seen.
Story:
Since BW OU, Hydreigon always hated stall. Therefore, she wanted to fuck every stall mon she saw. Now it is SV OU and her pure disdain for stall made her run Tera steel for toxic immunity. Then she raided the stall town, bringing terror. Clodsire needed to save the stall town, so he swallowed a low kick TM. Then, he launched a kick at Hydreigon, dealing more than a third of her HP in damage, seeing this, hydreigon fled.