Originally Posted by
Dionaea
At rank 5 it's incredibly powerful for the amount of effort needed to get it, but it only hits 3 enemies.
Not being at max stack means that the normal skills don't hit as hard, but if you are at max then Wrath makes you kill yourself in a glitched room. Using Arcane also occasionally makes you disconnect because its cooldown and effect duration are so close together.
Contrast those weaknesses with BB being a consistent autohit class with an incredible heal, and there's literally no reason to use anything else for farming, especially in glitched rooms where SS is either weak or unusable.