How to catch Zoroark is to have one of the semi pseudo legendary pokemon, Bring Shiny Raikou, Shiny Entei or Shiny Suicune from your deck. Then you go to the pinwheel forest (the one beside Nimbasa city).Then you go to the mobile home. A lady should come out and battle you. She is a Zoroark When you try to walk up tp the mobile home she jumps out at you and attacks. When you battle her at first she appears as one of the non shiny ledgendary beasts depending on the type disadvantige yours has. When you get it's HP down to 50% it tranforms into Zoroark. Try to catch it with an Ultra ball. If you don't catch it the first time you can do it over and over again until you do catch Zoroark. It is a event pokemon.