Mazir awakening is bugged.
For one the meter disappearing for most of the fight so you can't even see the progress of it.
The worst part about it is when it happens the hero is no longer targetable.
I've noticed this multiple times in the tower where fights drag out. All of my heroes stand around and let the last hero run around doing whatever until my entire team is dead.
Not only does it take too long to be of any use in arena it also makes you lose even when it does happen.