Profane Magic

Profane Magic can be described as a magic that is darker than black. Heavily divided between hexes that are tolerated by Imperium of Karadia and those that qualify their users for summary execution. With the difference being mainly the fact that non-accepted tends to demolish the minds of their users, slowly changing them into psychopaths, or are connected to Pentagram (which is pretty much the same actually). While this accepted part being only 'unpleasant'.
Profane Magic includes a variety of hexes connected to the power or various Aberrants/Enigmas (with contacts accepted as long as they aren't connected to Pentagram). These creatures are too alien to understand them, but not too alien to strike deals with them. The payment? Who knows what they want it for...
There are always risks. Profane Magic can cause damages to sanity of their users. It can cause mutation - detrimental, beneficial or neutral, but curiously unconnected to the Mutation part of the Corruption. There are also risk of Corruption as a whole, but that depends on the creature that is contacted. As long as there is no Depravity (but merely minor physical changes and/or neutral mental changes of Taint), the Imperium reluctantly allows the magic to be used openly.

Subschools of Profane Magic

Doom Magic [HX] - Basic unaligned Profane Magic, or to be more precise that hexes hailing from Aberrants as a whole, without any particular creature as an alignment. Damage sanity, include a lot of weird effects and tentacles, and are quite powerful if costly.
It can be considered a baseline Profane Magic (which is sometimes called Doom Magic actually), from which the other magics hail.
Blood Ice Magic [HX] - Tertiary school of Profane Magic that is believed to be somehow connected to the Grand Aberrant Nythrathril imprisoned beneath the Frozen Sea. Used by a variety of sects dedicated to it, and by many dark magic users from the Ice Kingdoms and northern Imperium. It composes elements of Ice Magic with Blood Magic and typical Doom Magic.
The red coloured ice (called Blood Ice) is created by magic (since they do not exist in the wild, they have to be manifested) and shaped into projectiles and weapons. After hitting organic matter they have a tendency of sudden expansion in both size and and mass, while assimilating the flesh into more blood ice. Under strong enough bombardment all that will be left will be distorted sculptures from this eldritch material, that for some reason doesn't even want to dissolve after magic runs out. Not to mention projectiles suddenly 'expanding' after lodging in wounds... it also causes sanity damage.
White Sun Magic [HX] - A tertiary school of Profane Magic connected to the mysterious being/event known as White Sun, which is considered a Grand Aberrant-class being by the Imperium of Karadia. It is considered a weird school of magic, because it is - on its most essential level - a counter-magic. White Sun hexes devour target's mana while dealing mental and sanity damage, can sap power off enchantments potentially breaking even lower grade artifacts, and generally seem to work as if White Sun's goal was eradication of magic.
Its spells use either pale white light or similarly colored flames. Their light can be used to project laser-like offensive hexes or to weaken magic in its sphere of radiance, while flames are mostly directly offensive and can potentially set enemies aflame, devouring mana and causing mental and sanity damages.
Abyssal Magic [HX][P] - A tertiary school of Profane Magic that is directly connected to Abyss, one of four domains of Pandaemonium. Obviously, it is connected to the Pandaemonium as well, making most of this magic proscribed.
There are literally a few hexes that are allowed, most of whom seems to hail from a sattelite beings of Discord, far enough from her that they are playing their own games, sometimes against Pandaemonium. They all use scarlet coloristics, attack by causing pain (moderate) and physical damage via tentacles or weird looking projectiles... but seem to truly excel mostly in mental debuffs. They cause disorientation, charm, and fear with ease, even in strong opponents.
Heresy Magic [HX][P] - A tertiary school of Profane Magic that is directly connected to Malice himself, being his part of the spoils from the Dawn War. Heresy Magic is essentially a darker and edgier counterpart of Soul Magic.
It works by manipulating souls. It can be used to create undead with their souls still attached to the body, bounding one's soul to an object and imprisoning him that way, or even destroying soul. All of those are gravest possible offences for any God, with even Malice himself resorting to the worst one (the soul destruction) only on few occasions throughout the history.
It is made slightly more troublesome to use by the fact that Death takes the offence personally, and has a specialized type of servile daemons created to hunt both creations of Heresy Magic and its users.
Rift Magic [HX][P] - A tertiary school of Profane Magic that is directly connected to Rift, one of four domains of Pandaemonium. Obviously, it is connected to Pandaemonium as well, making most of this magic proscribed.
There are literally a few hexes that are allowed, most of whom seems to hail from a sattelite beings of Agony, far enough from her that they are playing their own games, sometimes against Pandaemonium. They use navy blue coloristics, attack ba causing extreme pain and gruesome bodily damage via weird looking projectiles or tentacles... they actually excel in causing pain, being able to immobilize even hardened warriors by the intensity of it.
Void Magic [HX][P] - A tertiary school of Profane Magic that is directly connected to the Void, one of four domains of Pandaemonium. Obviously, it is connected to Pandaemonium as well, making most of this magic proscribed.
Curiously, those allowed hexes originate in power of Extinction as well. It is simply that she is an omnicidal goddess, her powers as happily obliterating powers of Pandaemonium as those of its opponents. Though the usage of them is still controlled, since overusing them might bring a magician or sorcerer closer to being an omnicidal maniac like Extinction herself.
It is considered the most devastating offensive magic existing. It has exactly zero uses other than those purely combat - no buffs, no debuffs, no summons, only annihilation and next to impenetrable defensive. It annihilates matter on most basic level, making things disappear. Strong enough can destroy SPACE itself.