OK, so now I've talked to the high priest, the priest, the master guard, the shopkeeper, the librarian, the tailor, the smith; the imperialist, the priestess, the fruit seller, the wrestler; the master tomb guard, the quartermaster while holding the shadow veil. And to the necromancer while holding Petrus's nut. He hated me because I had aggravated the Attnam team, of course.
I've spilled acid, vomit, and glowing blood on the veil, exploded it, died while wearing it on the other side of the portal, offered it to Infuscor and Valpurus, dropped it on the world map (You can do that? You can do that with all the quest items, even though you can't sell them or donate them to the Cathedral? Or is that just wizmode?) and sat on it.
I've zapped resurrection and necromancy on the cloak, on the ghost, on the ghost while it's standing on Xinroch's skull, a human corpse, and Golgor Dhan's corpse.
*Now* it's time for a hint.