A quick question on regarding the Miskatonic Repository:
In one place the guidelines refer to only using rules from the main rule book, Investigator's book, Keeper's screen, and Pulp Cthulhu. Other sections seem to indicate CoC 7th Edition as a whole. I have a scenario that leans heavily on the rules for Become the Spectral Hunter, which is now in the Grand Grimoire. Are the rules in that book off-limits for Miskatonic Repository publications?