Love this!
Right now several of the staffs could be really useful if targeting them on yourself actually did anything other than waste a charge. I know the polymorph staff may be able to change things other than monsters, but I've been too chicken to try it; every time I polymorphed a monster it turned into something even worse than the thing I was trying to escape from.
It might also be nice to have your own gravestone in a special spot reserved just for you at the front of the graveyard. Wandering all the way up gives a nice sense of all the meaningless deaths, but wandering all the way back is looooooooooong.