Ting-Lu @ Leftovers  
Ability: Vessel of Ruin  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Earthquake  
- Ruination  
- Stealth Rock  
- Whirlwind

Ting Lu is known for its ways of checking jolteon since way back then. Nowdays it does the same thing, take minimal damage from everything, setup rocks, use ruination to force progress, etc etc. But with jolteon shifitng more to signal beam/alluring voice/round builds it is going to be able to force past something like ting lu way easier