Talk:Princess Twilight Sparkle - Part 2/@comment-4604642-20131112035825/@comment-26113331-20131112194732

Maybe the Elements were once stolen from the Tree of Harmony (probably by Celestia) and this is how the Everfree Forest was born - "enraged" Tree started growing out this Forest to get them back and now after a thousand years the growth rate has reached its peak, and the Mane 6 must return them to the tree and thus lose them forever, and in the picture we see Celestia embedding them back into the Tree, which will cause the Everfree Forest to be wiped out entirely, thus rendering the old ruins to be easily accessible and after renovation, they will serve as Twilight's royal castle, and the Nightmare Moon flashback is brought by the Tree's power to Twilight (as she bears the most important element) because it was the very event that made Celestia steal the EoH from the Tree in the first place?

This is my theory that I thought of right now.