Originally Posted by
Deithy
I believe the talent will be quite viable on fights with adds spawning for the most of the duration of the fight. It will allow for good bursting of a new target very good if you play it smart. I can also tell you a good fight where it will be very good tallent - Elisandre in Night Hold. You basically fight her 3 times with constant big adds spawning.
Also people say that by the time we get into raids Fire will have decent amount of crit, but I also think that talent will be good for the initial progress of Nightmare(at least first week or two), because you will have reliable burst on pull.