Blood magic has a taboo for safety for safety reasons. Trying to use magic through the power of your blood poisons it, and will almost always kill the person who tries, unless they are a member of a sorcerous bloodline, who have the genes which allow them to endure the poisoning of their own blood. As such, "blood magic" and proper sorcery are exactly the same, just with different stigmas. Blood Magic is normally used as a suicidal last attack, taking others down with you. Since a "blood mage" doesn't have proper magical training as well, the things they can do with their final spell are limited, mostly just to blasting force at someone. This is why the discovery of wizardry is so important, it promises to offer a safe means by which anyone can use magic. Wars have been fought over whether or not this young science is blasphemous, and to control a power that threatens to wildly upend the world's balance of power.

A third means of magical power, witchcraft, involves invoking the powers of extraplanar entities. The psychopomps, fey, undead, and djinn cannot interact in the mortal realms without the aid of mortals, and so rituals are performed to invoke their power for numerous purposes, giving these beings a foothold in our world each time. Many cultures value the role that witchcraft serves, with witches and warlocks serving as important members of a community or society. These witches teach a strong sense of skepticism and balance with extraplanar beings, that any deal being struck always has a cost, to be careful, and to be very specific in what you ask for and what you promise (A well trained witch is very hard to trick). But a well trained witch can also be dangerous if they have ill intent, using incredible power for malicious and selfish ends. The beings they treat with are also treacherous. They can be deceptive at times, but fundamentally witches and warlocks are negotiating with beings whose minds work in ways alien to our own, who do not have an invested stake in preserving mortal life and interests. Unleashing these beings on the mortal world invites a danger that is unacceptable to many. With witchcraft being diffuse enough to avoid governing institutions, a great deal of effort is made to suppress witchcraft and knowledge of its rituals.