Is there a Pokemon I can easily find with an ability-switching move in Omega Ruby?

Question

I want to know because this factor will determine if I can use a battle plan involving shedninja.

Answer 1

Basically Sylveon is the only Pokemon you can find in omega ruby that learns skill swap by level up. On Route 116, you can find eevee with the dexnav. The evolve it into sylveon, where it learns skill swap at level 25. Hope I Helped!

Source: Pokemon DB