I am an egg that contains a palace, or rather, I am a palace that has been contained in an egg.

In any case, I am an underworld marvel made into a miniature so that I can travel between worlds.

He who has the magic to turn me back into a palace will be able to enter it in the upper world, and take from me what he needs to serve my mistress.

That is all I can say. To say anything more would be to give my secrets away!

Magic Egg in The Norka, Russian Fairy Tales Collected by W.R.S. Ralston. Egg by Faberge.