I was trying to get a good nature Nihilego by trading another Nihilego. But then I got the same Bashful German Nihilego twice.It's a good thing that there are still people constantly trading Tapus and Ultra Beasts for another of the same species in the GTS.
I myself got to the 5 trades required for the Rare Candies trying to get an Adamant or Jolly Buzzwole.
(I failed)