What would happen if a Pokemon was Skill Swapped Stance Change?

Question

What if something were to Skill Swap the ability Stance Change from an Aegislash?
What would the Pokemon receiving Stance Change end up doing?

Answer 1

Stance Change along with Wonder Guard, Multitype and Illusion cannot be Skill Swapped.

Source: http://bulbapedia.bulbagarden.net/wiki/Skill_Swap_(move)

Hope I helped :)