Just a quick idea, how about a guild that is joinable through conjurers (you
figure out the restrictions), which allows players to lessen the resistances
which monsters have to certain damage types. It would possibly increase the
number of lower level mages in the game because with a vulner, a party wouldnt
need 1 mage with a pile of damage types...I've got more brewing upstairs about
this but just thought I'd throw it to the wolves first.