Back in POTCO, once I got the staff I rarely used anything else. But at the time when I played, and I stopped playing before the level cap was raised to 50, maxing out the casting speed skill made flaming skull and wither cast much faster than they do today in TLOPO, thus making for much better damage output. Perhaps the staff was nerfed somewhere along the way, or maybe the casting speed skill doesn't work quite right yet because I don't find the staff nearly as useful with the slower casting speed as it once was. Though I still enjoy using it whenever I am facing multiples in a pull that I don't really want all hitting me at once. I can usually get them mowed down with the staff by the time they get to me which, for obvious reasons, is preferable.