Life Magic

Life Magic is a type of magic that allows to manipulate life force of living beings. Despite the connotations of the name, this isn't healing magic (as such magic doesn't really exist outside of a small part of Blood Magic). While small ammounts of added life force can empower and increase speed of recovery, greater ammounts of it can and in most cases will cause cancerous growths and similar 'disorders'. In most cases deadly.
On the other hand, Life Magic can also take or steal such energy. Which causes fatigue, pain, weaknesses (of both body as a whole and senses) and - if magic is strong enough - complete senses shutdown, paralysis, catatonia, necrosis or death. The 'stealing' part also allows to strenghten user at the cost of his enemies, mainly in fatigue and magic power. Which makes it a suprisingly deadly weapon in profficient hands.

Subschools of Life Magic

Death Magic [HX] - Death Magic is a stronger, more difficult and much more deadly version of Life Magic, that uses an energy that is an antithesis of lifeforce (called, by association, a deathforce). Death Magic has no enhancement uses... instead it weakens enemy immensely. Profficient user can cause great pain merely by touch, since its magic can literally annihilate lifeforce. While each person (or creature/daemon) have lots of it, it isn't infinite. And can run out surprisingly quickly.
Hexes of Death Magic can be divided in few categories. One is melee enhancement, which means coating your hands or weapon in mentioned effect. Second is offensive ranged magic that allows to throw black coloured projectiles that aren't too good in penetrating armors, but if they reach flesh an effect is pain, paralysis, weakness and other debuffs. Third category are debuffing auras, causing weakness and not requiring physical contact.
Lust Magic [HX] - Lust Magic is a rather weird branch of Life Magic that uses similar methods of lifeforce manipulation but in a way 'attuned' to only certain type of lifeforce. Mostly, lust, arousal and so on. With hexes equally usable in bed and on a battlefield (where they range from mild debuffs to complete debilitation +some buffs and directly offensive hexes). Also an ability to use sex and lust to bolster your own mana or even power up spells and hexes directly.
It can forcefully attune one's lifeforce to lust, damaging one's ability to think or do anything outside of sex. After overwhelming somebody completely and attuning 100% of his lifeforce to lust, the target is literally unable to continue fighting, often starting masturbate mindlessly on the battlefield. It is considered a rather weird and rare magic, with most of its practitioners being... interesting people, and it's less useful in combat than one thinks.Many people doesn't even know that it exists.
Pain Magic [HX] - Pain Magic is a rather weird branch of Life Magic that uses similar methods of lifeforce manipulation but in a way 'attuned' to only certain type of lifeforce. Mostly, pain and suffering. Its hexes are usable mostly on the battlefield (unless some associates pain with pleasure), where it can be used to weaken enemies by causing intense pain. Or weaken it in your allies.
It can forcefully attune one's lifeforce to pain, damaging one's ability to feel anything beside it. After ovewhelming sombody completely and attuning 100% of his lifeforce to pain, the target is unable to continue fighting because everything he can feel is equally overwhelming pain. Which can drove weaker enemies insane. It is considered a rather dangerous and not exactly welcomed magic, but it exists in Imperium nevertheless.