Basically, the elementalist has the ability to turn into a vapourous mist and the f1-4 buttons change the attunement of the elementalist and a visual change to the aura arond the elementalists wrists.
the problem is that when the elementalist uses the mist form, they turn into the cloud but the wrist animation continues.
the result looks rather silly because you can clealry see two little wrists (essentially) bopping along inside the cool mist, which completely breaks the illusion you are a mist.