Izual's phase transition Frost Nova, while bullcrap, is avoidable when he doesn't bug. I have wiped repeatedly on him on Inferno because of the following bugs:

- Sometimes he will cast the Frost Nova and then yell his line of dialog, instead of yelling to announce it before casting. This makes it impossible to use a cooldown to survive it.
- Sometimes he will not yell at all and just cast the Frost Nova. Again, impossible to survive. This appears to happen most often when you are far away from him.