Going wraith bell only is so comfy.
I can just stand outside the boss' aoe radius and ding ding away. Passives can maybe add 20-30% damage so it's not too huge compared to just getting gaols.
Since it doesn't scale, getting a rise is basically the same as getting 2-4 levels since it's all about FP.
If you happen to find defensive passives it's super tanky too.