how to get eggs?

just like that? how to get eggs

Wait till Easter time. It'll be a special holiday item like presents and pumpkins that you can use in the gem shop to buy special holiday things. What those are, no one knows... yet

Easter Event starts on March 29th from what I have read :)

youll obtain eggs during easter event coming march 29.

They will be maps like adventures. Go just visit without army and find and click on the hidden eggs.
You explorer will also find 1 or 2 each treasure hunt he does.
Plus you can buy them with gems in the gem shop. (Of course)