Originally Posted by
DrakeWurrum
Far as I can tell, you don't become immune to anything as a tornado. The moment you change into one, prepare to suddenly become focused by every enemy player nearby in PvP, tossing chills and cripples and stuns and knockbacks your way. ^_^
Note: It locks you out of your 6-0 while you're a tornado.
So I imagine it's going to primarily be a PvE skill. And even then, that's assuming you get lucky with enemy AI not targeting you. We've seen in dungeons so far that there's plenty of knockdowns and other CC effects!