Hello
Do you think the balance druids really use the arcane or is it a game mechanic? The light purple color of their abilities is more or less similar to a arcane.
One of the tweets (which is no longer available since Sean Copeland deleted his twitter, so I retell from memory) said:
''In lore, the Druids use the power of Nature. The fact that part of their spells deals damage from arcane magic is game mechanics. Also, the forces of Elune are considered divine, not natural magic, but the forces of the sun is fire magic. After all, divine magic is the magic of God.'' In the preview of the druids of the specialization "Balance" in Legion(https://worldofwarcraft.com/en-us/news/19956929), their use of arcane magic is still indicated. But this may be the mistake of the article. Or not.
But this statement can hardly be considered a canon, because the separation of purely arcane and divine magic (and their subspecies) is information from RPG books and it has long been outdated.
Maybe the druids, following the example of the arkan'dor (or maybe Nordrassil to some extent, he still grew up on the second Well), restrain the arcane by nature? Maybe the night elves only forbiddance the use of pure arcana? Tyrande herself grew up in Suramar, where the Arkan'dors appeared. Maybe she suggested this idea to Malfurion. Arcane magic is, in fact, the magic of space and time to some extent. All this star theme is really more associated with arcane magic than with nature magic.