Because the setting I run for
Jewel of the Desert is intentionally highly cosmopolitan, most things would not get more than an odd glance based on what the power is--even devilish powers, since tieflings are a well-known phenomenon. Far more likely to get you the stink eye is your behavior, what you
do with your magic--to the point that the dominant religion of the area, the Safiqi priesthood, has a legit internal affairs division, the Asiad al-Khafyun. Their primary purpose is hunting
actual heretics. Not the incorrect meaning of heretic as used by WK40k--where it should
actually be "infidel," NOT "heretic" in most cases--but the real meaning, that is, those who have begun to spout dangerously divergent doctrine.
The Asiad basically never go after ordinary folks, unless there's a serious planar incursion (and the party has made sure that that is exceedingly unlikely to happen again, at least for a good while yet). Their targets are treacherous priests who have broken their oaths and begun using their powers for wicked ends, or people who are secretly practicing forbidden rituals to harm others, that sort of thing. The Asiad are not
nice, but they are dedicated to the cause of Good.
But yeah, there's really only three things that would get you in Deep Doodoo if you were caught doing them, in rough severity order:
- Necromancy, other than proper resurrections, restoring the dead to their form in life. This is a HUGE no-no in this region. The deep desert already has enough dead things, or things that should be dead, crawling around in it.
- Mental enslavement. Slavery in general is the other HUGE no-no in this land for historical reasons, so magical slavery counts just as much as mundane.
- Committing magical crimes (e.g. magical voyeurism). Severity obviously depends on the severity of the crime.
Other than those three, most folk are used to people trafficking with the Weird because Kahina (shaman+druids) do stuff with spirits, Waziri (wizards+artificers) can do all sorts of High Middle Ages/Renaissance "tech"/alchemy stuff, and it's known that there are other traditions both religious and secular in other lands. Of course, one would be wise not to get a
reputation of trafficking with devils or demons, as that's likely to get Safiqi eyes all over your business.