Several new lore books have appeared in the Emerald Dream on the PTR, about the relationship between Elune and Eonar, the nature and history of the Emerald Dream itself, and more hints that sooner or later we'll head west to the continent of Avaloren.
The Legend of Elun'Ahir tells of a legend about a first World Tree, one that was planted by the Titan Eonar herself. Like Nordrassil, this World Tree came from G'Hanir, the greatest of all trees that grow within the Emerald Dream.
According to the story, Eonar was gifted a branch of G'Hanir from Elune, and she named the World Tree that grew from the branch «Elun'Ahir, in honor of her great love». The Titan Aman'Thul was angered by Eonar's actions and ripped the World Tree out of Azeroth.
Eonar noticed that the tree's roots remained in the crater left behind, and she charged her Keeper Freya with protecting these roots. Later, mysterious guardians arrived who dedicated their lives to protecting these roots.
According to the book itself, this story could be a legend rather than history, but it provides an interesting perspective.
The resulting crater left behind after Aman'Thul pulled out the World Tree is, presumably, Un'Goro Crater, and the guardians who arrived the Wild Gods.
Eonar has always seemed a little more Life-aligned than Order-aligned, and this legend suggests she's close with Elune. There has been some hint of this before — the realm in which her spirit hid from Sargeras and the Burning Legion is called Elunaria. While that realm was never confirmed to be related to Elune, its name combined with this legend suggests it was Elune who helped protect Eonar.
The book also portrays something rare — conflict between the Titans, with