Originally Posted by
Joryy
It isn't 50%. it is up to 50%, which means that over the course of the entire execute phase, it averages 25%. Given that you get an add to proc value out of ToF on literally every fight this tier in mythic nighthold, it is incredibly safe to say that Twist is better.
As to shadowpriest vs warlock, you've got your head up your ass. Tuning for Tomb hasn't happened yet, so your prediction is factless. Further, Shadowpriest public logs outnumber ALL warlocks on m Gul'dan (and most of the other 19 bosses so far this expansion) prior to 7.2.