I'm going to continue on with what Nerdy said- doing a Wonderlocke gets you some amazing finds. I've got a Durant with great IVs (but sadly with Hustle), a Calm Piplup, a competitively bred Gible with Outrage as its Egg Move (which, might I add, destroyed the early game), a Charmander when I needed one, among other things, including a Phione. You thought XY was easy before? Try a Wonderlocke. You'll have so many breedjects by the end of it that'll be able to wreck everything in the game.