Lithanar

So I was rereading rhythm of war and I had an idea. If gavilar was searching for immortality, and he had the ability to get void light he was able to create a sphere of anti void light and He was dealing with people from other worlds. Is it possible he was invested in some manner? If so could he be a cognitive shadow maybe stuck somewhere and the big reveal in the prologue of book 5 is that his cognitive shadow is somewhere in the cognitive realm maybe being groomed to be odium's champion?