I've been trying so hard to complete the easter egg hunt goal by breeding an Easter dragon which is fire + air. I kept getting firestorm until a new egg appeared. I thought it was the Easter dragon but when I was about to hatch it, it was a Mythic Dragon! Wow! So if you want a Mythic keep breeding fire+air! However the mythic habitat is $6,000,000 x_x I can't afford that ... Lol!