Is there a way to obtain the skills and qualities of someone who is no longer living?
Examples (of what must come across as a poorly-worded question): is there a way for someone to take on the musical talent of Joe Pass or Jimi Hendrix? For someone to suddenly have th genius of (say) Mozart, or DaVinci?
I’ve read of several methods and spells to help a person develop their own talent: is there a way to obtain somebody else’s, now they are no longer using it?
You could invoke them to take on their qualities similar to how one invokes angels and demons to become more like them. Whether it would actually give you their exact level of skill and talent is questionable, but it would certainly improve any talent you already possess.
You can also evoke they ghost with the help of a psychopomp being (Hecate, Anubis, Azrael), so you can make a contract with the ghost. You can for example give some offerings to it. You can also bind them, but I would advise to not do it because it can damage your relationship with that spirit