^ I have yet to breed a shiny nor see one in the wild on X/Y- it happens.
First and only 6IV is Trevenant- too many 5IV's to count. I wanted to see how easy it was to get 6IV's and Phantomp was my practice pokie.
I did how ever spend a good amount of time trying to get the right nature on a Pokie while maintaining the 5IV's I wanted- it only took 129 eggs to get the nature since neither parent had it to Everstone, lol. Would have been nice if a shiny popped out, but, I did not want to take the time to hope in getting one since the pokie was for my Regionals team and time was not my friend.