The Outsider Heresy is believed to have been one of the primary beliefs of the rogue Apostate of Matratut. The heresy basically stated that there was an entire universe outside of the known world of Jalbroth and that Uum was but one of many gods. The priests of Uum exiled and burned many for this belief, but the possible truth of it could easily be verified by...
(Recovered from the personal collection of Cecil Brund after his death. The second half of the manuscript was found burnt badly and illegible. There is no evidence that this entry was published during Cecil's lifetime.)