I was expecting the effect to proc but I have very low hope of it happening so I didn't really rely on that from happening. If it did happen, then fine but if it didn't, it's still fine as it's not that big of a problem.
However, since it was instant death, I was expecting it to be something that can drain every single HP bar of the boss if it ever gets proc by chance. Seeing that only one HP break bar disappeared after the skill procs, it means that the effect can only destroy one break bar. To continue reducing all of its HP, I need to have it proc twice to remove all two HP bars of the Tormentor. Since it happened so fast, the Tormentor skipped the 3rd phase, it seems the Tormentor is confused about what happened and instead of switching to a 4th phase, he transformed only once and that's it.
