Training Reference For All Magicians

For the record, as far as I can tell, much of PF is terrible for Mages. Bishops can smash Elder Wraiths, but aside from Bigfoot for f/ps, the rest is either too weak or Immune/ Resistant to magic. (Take the Guardians, they are the best thing to train on, but they have resistance to everything. I/Ls and F/Ps MAY be able to use Ice/Fire Demon -> Summon, and Bishops can't do so, but they can CERTAINLY leech off of anyone there.)