As stated in the Easter Event Overview, when 2 of the new Aeri themes mate and unify, something special will happen.

I was lucky enough to get two opposites Gender Aeris on the first day they could be captured, and was able to use magical pies to speed up their aging process.

Today they were old enough to be bred together, and I'm happy to say that the post held true to it's word;

*Text was glitched/messed up accidentally, please ignore that, the females name is "Arya Frostspell"*

Here is the egg in all its glory;

*Pictures are a few hours old btw*

He's the second on the site; to check for "Mistwarden" Aeris, you have to select "Yes" on "Include Purebred" since all the current ones are purebred, not exclusive or caught.