I just found out if you breed 2 Crystal unicorns together, you will get another one much quicker then breeding 4 elements!!! Just paired them up and on first try got 45 hours. Speed up with gems, and tried again, and get another 45 hours!!! But on the third try, did get a common creature, but it looks like it's easier to get more this way!!! Just like dragon story if you breed 2 diamond dragons together you have shot at another one! To all those who didn't get one yet, I give you lots of luck and hope you get one very soon!!!