I have been running a horror campaign. The Big "Bad" is a supremely powerful occultist who, due to being cursed with eternal misfortune and reincarnative immortality, cannot find respite. Because Pharasma is the one who cursed him, if he were to simply rid himself of it he is certain to not receive a peaceful afterlife, so he has resolved to use all the cummulative resources and knowledge of his several thousands of years worth of restarts to find a way to erase himself from existence. Not the world, just himself.
To achieve this goal, he wants to access the Akashic Record and ritualistically rewrite himself out of history. How he will reach this place I have already worked out (it is suitably contrived and difficult). However, I am not sure how to portray the record. Is there any book sources that can speak more on the subject? What about the Dimension of Dreams? Any word of advice would be welcomed.
Occult Adventures describes the Akashic Record and the Dimension of Dreams.