I have this rogue psyker that I'm trying to develop and I need to figure out a way to advance his skills and "learn" new abilities. I won't be allowed to simply purchase new talents from his psychic discipline without finding a logical way in game to go about advancing his powers. The purchases will be elite advances and I'm wanting to nail down a really good reason as to why his abilities are flourishing.
He is extremely reluctant to use his powers, not a single soul on the ship even knows he has powers yet and I'd like to keep it under wraps for a while longer. Not being the type of guy that could just experiment with his powers, I figured he will either have to find some kinda of forbidden information or be exposed to a psychic phenomena that triggers some latent power. He's an extremely pious character so dark evil things and chaos involved things aren't really going to be something he'd search out, so that isn't really an option when it comes to "how did he cultivate and hone his powers"
If you have any ideas or if there is anything lore-wise or in the source books themselves that would be helpful to utilize that would be great.
He already has a psy rating, I'm just trying to explain his development from a what some may call a wyrdling into an actual talented and battle ready psyker.