Let me start of by saying that I completely hated Tornado.
Until I was out of decent power choices at 49, and decided on a whim to take it. Now, I am rethinking that 'hating it' thing. Why?
Because in certain situations the damage ticks from Tornado come *very* fast.
Situation #1: this is when the mob is immune to kb/kb and the tornado just 'sits' on top of them damaging them. (Almost all AVs do this now)
Situation #2: this is very easy to make happen. Any recent Immob on the target will prevent kb/kd for about 10 seconds or so and have the same result. Not absolutely sure about holds, but they may also give the 10 sec kb/kd resist.
Note that for either situation to work there cannot be other mobs nearby or the Tornado will go wandering.
Anyhow, once I get my third respec, Ill copy to test and let you guys know how much damage a 6 slotted tornado on the fast damage tick does