Board Thread:Questions and Answers/@comment-44975735-20200305170443/@comment-44975735-20200409131037

Ok I think I got to the fun bits. I think that Elsa was born to replace the Northuldra leader who was killed by Runeard to fix the relationship between elements and humans as well as between the elements themself. It was decided that the new spirit would be Iduna's child because of her selfess personality that would get very well carried over to Elsa. Then the spirits (probably Nokk) rescued Iduna so that she can call Elsa to Ahtohallan to become the new spirit. That's just my thought on some of the things.

Or maybe the whole calling was done by Ahtohallan with all the voices taken from it's memories of Iduna. That would be a nice plot twist.