Voadam
Legend
It was interesting and had potential, but I mostly came down on the side of not really seeing LG paladin Hieroneous and LG cleric St. Cuthbert churches allying with explicitly evil Vecna priests just to war upon pact magic users. Possibly if pact magic were unleashing an apocalypse or destroying the gods, but pact magic was essentially just a different kind of magic and less bad than the then explicitly fiendish warlocks. The Seropenaean order of secret church alliance concept would have worked better if it was set up to thwart something of a more existential common threat like Tharizdun cultists in Greyhawk.I also found the Greyhawk lore for Binders really interesting because a lot of deities and their worshipers actively opposed Binding and hunted down Binders. There was even an alliance between Good, Neutral, and Evil deities (one of them Vecna) specifically to eliminate Binding.

