I recommend playing with a 4th, possibly 5th Class rules exorcist. You will need to provide the eye of newt, frog powder, crocodile teeth, and bottled moon beams. The headaches and hallucinations caused by reading the icons yourself can be lessened by breathing in the vapours of chicken stock to which ground unicorn powder has been added. For safe storage of the rulebook a lead-lined container placed on a spot where ley lines cross is sufficient. Mine only growled once every blue moon thereafter.
In short: to my knowledge, no alterations have been made.
I have no familiarity with the pearl games rulebook, but the z-man book was perfectly fine, all of the icons were good, and they included a second fixed card for the... bishopric I wanna say? that I sent out to an owner of the pearl games edition. I quite like the game, perhaps even love it.