The Tree of Harmony...

An ancient, mystical, and mysterious, tree that houses the Elements of Harmony. No one knows how long it has existed for, or why it even exists.

Many questions are asked about the origins of the Tree of Harmony, like how does this tree harbor powerful magic, or how did it create the Elements of Harmony. But a bigger question arises:

Is the Tree aware?

That answer rocked the thoughts of Twilight Sparkle when a large magical flux occurred in the Everfree Forest. She goes to investigate to see if the Tree of Harmony was alright, but she wasn't ready for what she was about to see.

Takes place a few weeks after the Season 6 Premiere.