At first, I hatched 4 packs with no legendary and mythic. Didn’t get a single one (not even dupe).
However, upon hatching singles I got an Onigeist dupe and a Van Sith, even though they are not in the New Years Festival Egg (Cinder).
@Dev VKC there is a bug with the eggs. The monster list for the legendaries and mythics aren’t accurate. Please refund my gems, or exchange my monsters as necessary 