For the purposes of getting better at manifestations, Shax is the 44th spirit in the Goetia he is said in the Goetia too help with giving or taking away, sight, understanding, and stealing from the houses of Kings. His positive attributes of giving things seems too fit very much with more modern ideas related too manifestation of different things
He’s very good at helping you know who your enemies are, even when they are using invisibility workings and/or trying to stay hidden. Works through clairsentience for me - you “get a hunch” and then you just have to watch the person and wait for them to reveal themselves by thier actions.
Interesting I do work with some other spirits who can also help with this sort of thing. But i have gotten very interested in Shax recently but none of my guides have said what exactly he would help me with.