I don't think there is any specific duo of monsters you can use to breed a unicorn, dragon or griphon. The main thing you want to do is level your monsters up. I have made a few mythic monsters using level 11 and higher monsters. Never a unicorn but I have one griphon and several dragons. Look for the yellow hybrid that has wings , horns and a tail. That one and the Mino is what made the last dragon, but like I said its more about the levels, because you will get something different every time.
You can't place a definite combination as to how you breed one. Level up your monsters, the higher the better, breed them and hope for the best.
Go to monster park fan . com they have ways to breed every monster
you breed a tree with a rock
A Mino + kongi
Breed a yeti and a krak.
Breed a blob and a discopan
to breed a mino you simply have to get to the proper level and then you can purchase it as well as the home for it
you cant
to breed a mino you simply have to get to the proper level and then you can purchase it as well as the home for it
you cant
Med and hippie
easy.... you dont