Is Hex worth it at high levels?

[diplomancer]

We DO know at least one thing about what these actions from spells entail: that it is something that a druid in the form of a bat, a frog, a lion, a spider, a shark, etc. can do. So it's almost certainly a mental and not a physical thing, and definitely not speech or hand gestures. I guess it could be some type of eye movement... maybe the Sabrina thing with the nose, perhaps?