What good is classic Treeform?

[Somekid123]

What good is classic Treeform? Im currently using Spirit of Oak and have played with the level 9 Treeform, realizing that majority of mobs see through it, I recall in classic that treeform gave you at least indifferent to a handful of mobs because.. obviously your a tree! why bother!

I would assume most undead see you behind the illusion, but even now being in FoB the iksar bandits, guards, scorpions, skeletons, bonecrawlers, etc etc see through it, is this classic?