Elune's nature is still one of the unanswered questions in World of Warcraft. I believe that Blizzard has been hinting that Elune is the Winter Queen's sister, due to how Ysera died (although there is an argument for Eonar). However, even if it is true that Elune is the Winter Queen's sister, this doesn't answer the question of what Elune is.
I propose that Elune is a member of the pantheon of life based on the following thoughts:
- (Assuming Elune is the Winter Queen's sister) The reason the Winter Queen is vexed with her sister is due to her sister being from Life -- the antithesis of Death.
- As the realms of Order, Death and Shadow have pantheons -- the Titans, the known pantheon of Death, and the Void Lords -- it is reasonable there is a pantheon of life.
- Elune has ties to the Emerald Dream and her power seems on par with that of other WoW deity.
- Tyrande's nature of the Night Warrior is thematically consistent with life: it grows and consumes until depletion and death.
I think by having Elune as a member of the pantheon of life, it would reasonably fit with the current story and allow for future stories around the balance of the WoW cosmos.
What do y'all think about the prospect of Elune being a member of the pantheon of life?