Pokemon Black/White question plz give opinion?

I own Pokemon White and recently I obtained Zoroark and Zorua through Celebi and Shiny Beasts. Both of them have the ability illusion. This ability really annoys me cuz i think Zoroark and Zorua look and are awesome but with illusion i cant see the true them in battle till they are damaged :(. I know this sounds confusing but I really need your opinion. Also are there other abilities Zoroark/Zorua can get?