Talk:Eggs/@comment-86.10.187.17-20120627171758/@comment-5165953-20120627190805

Lichen and Crystal will get you all 3 rares, but if at all possible you should always try to avoid the earth element in there. You could, in theory, have to wait 24 hours every single time you fail to get a rare dragon with that combo. Firefly + Lichen will also get you all three, with a maximum fail time of 6 hours. That's 4x less waiting for failed attempts, therefore more chances to breed, which increases your chance to succeed in getting a rare dragon. If you just want a rainbow and don't care about Moon or Sun, go with Firefly + Seaweed.