Thunder wave is a funny move

Cobalion @ Leftovers
Ability: Justified
Tera Type: Fairy
EVs: 4 HP / 252 Def / 252 Spe
Jolly Nature
- Iron Head/Stealth Rock/ Iron Defense
- Thunder Wave/Body Slam
- Protect
- Body Press
With para move + protect, cobalion can fish for full paralysis to extract as much healing from its leftovers as possible, thunder wave is generally the best option but body slam can be run for the singular purpose of paralysing ground types. Body press is stab that ohkos gambit and does damage off the stat you invest in, your fourth move is customisable, iron head is secondary stab which is nice (also has a 30% flinch chance
) whilst stealth rock is immeasurable utility and if you want, you can iron press to take advantage of the 25% chance of your opponent doing nothing
Another benefit of thunder wave (and body slam I guess…) is that it lowers speed, so it pesters all those speedsters looking to switch into cob and kill it which benefits its slower teammates.

Cobalion @ Leftovers
Ability: Justified
Tera Type: Fairy
EVs: 4 HP / 252 Def / 252 Spe
Jolly Nature
- Iron Head/Stealth Rock/ Iron Defense
- Thunder Wave/Body Slam
- Protect
- Body Press
With para move + protect, cobalion can fish for full paralysis to extract as much healing from its leftovers as possible, thunder wave is generally the best option but body slam can be run for the singular purpose of paralysing ground types. Body press is stab that ohkos gambit and does damage off the stat you invest in, your fourth move is customisable, iron head is secondary stab which is nice (also has a 30% flinch chance

Another benefit of thunder wave (and body slam I guess…) is that it lowers speed, so it pesters all those speedsters looking to switch into cob and kill it which benefits its slower teammates.