On the Liber Mortis:
7. No Magister may ever study the Forbidden Lores of the Daemonic Powers, nor the unholy ways of Necromancy, nor any other sorcery or witchcraft that utilises the wicked powers of Dark Magic. Any Magister found disregarding this Article is guilty of an Abominable Act and is both Heretic and Traitor and will be put to sword and fire immediately.
The verb is study. Not use. Study. Dear Gott im Himmel. They were not messing around with that one. I think reading the Liber Mortis, even if you never intend to, or use it for Necromancy, or any kind of Dhar working, might just break the 7th law.
Thing is,
this is 15:
15. All Magisters are required to exert themselves to seek out and counter such destructive and anti-Imperial machinations, practices, peoples, and creatures that are beyond the means of civil authorities and Sigmar's Templars to counter, but yet still serve the Daemon Gods or advance the corruption of Imperial citizens through any sorcerous or infernal means. This shall be the prime concern and purpose of the Colleges, their Orders and the Magisters belonging to them, and to fail in this duty is to render void all the Articles of this document and make obsolete their permission to practise arcane arts without hindrance.
So if you are studying the Liber Mortis in following the duty of 15, to "seek out and counter such destructive and anti-Imperial machinations, practices, peoples, and creatures that are beyond the means of civil authorities and Sigmar's Templars to counter," you are in violation of 7s "No Magister may ever study the Forbidden Lores of the Daemonic Powers, nor the unholy ways of Necromancy, nor any other sorcery or witchcraft that utilises the wicked powers of Dark Magic."
Am I getting that right
@BoneyM ?
It's the same problem someone studying the Wind of Death might have. If they study Necromancy in an attempt to disover how to better disrupt it and kill undead, they are in the same position.