During the Dragon Migration Event, you will be able to build a Nest (Which costs XX lumber) anywhere in the map. The nest will attract nearby bunnies. The nest will be able to consume nearby meat to get energy. At the end of the event, whoever had the most energy in the nest will receibe a Dragon, which he will be able to level up and will learn spells.
Destroying enemy nests is a good way to sabbotage!
However, if it dies, he is dead forever! (Or till next game)