Would you mind sharing what you know of it? I kind of just got the term into my head out of nowhere..like a vision I guess. I intend to practise it im just curious so share your knowledge please? :) I searched the internet for it so from what I gather it works partially with the dead, its very powerful and yet elusive.
What you gathered is probably aboat video games or written by gamers, a lot of magic works with the ded, or rather the spirits in modern days there are weary few people who dig up corpses for magical porpoises, magic has no power difference, the spells power is determined by the caster nothing else, and tell me how can a type of magic be elusive, its all the same thing and works on the same principles, and now to try to answer your question, if im not mistaken than its a term developed for magic that is not quite black magic, but those people are abiosly not weary educated on magic because magic has no color its all the same thing the difference is just how you use it, and even know you placed it in other paths it is so not a path
The only form of shadow magick I know of works with the jungian shadow, the part of your consciousness which is negative and which you reject for the most art. It is about accepting and reintegrating it.