Dragons can be bred here to instantly create a Dragon Egg. This will create a new egg that will be laid on a Dragon Nest. If all Nests are full, players will not be able to breed, but instead will be prompted (before breeding) to make room by hatching an egg using Amber (the egg suggested will always be the one with the least remaining time to hatch) before they can breed the egg.
The odds of producing a higher end egg increase when matching higher level dragons or higher categories of dragons. Thus, two level 1 common dragons have a very slim chance of breeding a rare egg, but two level 9 epic dragons have a higher chance of breeding a epic egg.