Thanks for the replies. So far as the stone arrow is concerned, I'd picked it up quite early to have something non-fire in the arsenal. Note that I did finally get a level in earth magic out of it. I suppose I'd hoped to proceed to Magma Bolt and then to Lehudib's Crystal Spear, but maybe that's imp...

I'm probably a bit out of my league here, and have no business playing mummies. But here I am. This is the first I've had moderate success with, and am looking for advice as to how to proceed. He's been quite reliant on sticky flame, mephitic cloud, and this lovely rod of destruction (fireball and b...