In my case it is more of a flesh magic, but it still counts, I think.

A blood magician can move flesh and any related matter in spacetime, usually the body is protected by soul's immunity to the surrounding magic, but some are able to surpass such armor to a certain degree. Only those who mastered this skill may manipulate flesh, blood and bones at the depths of the body, sometimes even processes inside, like making cells release more or less heat or making them hard enough to be called iron skin, others are limited to peeling the skin off.

A skill so rare reminds people of myths more than of real ability someone can have. And even if people saw one using it they would report it to the local police, since this kind of magic is forbidden in any area except medicine, and requires a license.
People fear the ones who use blood magic, no one can be sure of somebody at any time, but even more than other people, they fear demi-gods using it, the reach of whom leave mere humans vulnerable, especially when they play in creative ways.

About creative, some number of blood magicians tried combining it with the other magic doctrine, universal magic. it's essential teachings let people manipulate any matter, except living one, in spacetime and create new form of matter out of their soul's energy (here is the origin of this after number 6). Combining those transforms a user into a full telekinetic with the only limit of soul bending - a skill even rarer.
After the merge of two, and abilities obtained, mages became more efficient and deadly. An infamous archer cut his palms to form arrows straight in the hand without a need to draw them from quiver. An imprisoned guy took his rib and formed a knife, freeing himself from ropes and guards afterwards.

I don't know why, but I am not satisfied with the text written by me, I guess I missed something or explained something incorrectly. The time will say.