The Heavenly Gate. The gate of testament and trial. When it opens to a cultivator, it is a good sign of luck. Because this gate only appears for those that have great talent.
Yet, I have no talent to speak of. I'm simply lucky.
The Poison God's heritage isn't a complex cultivation method. And it is easy to understand and easier to rise in rank thanks to eating poison.
Though it requires a lot of luck, not to practice, but to actually be accepted by the book, acolyte within it or not.
As for inscriptions, my knowledge from a past life had allowed me to easily understand, deduce and simplify what many in the world of cultivation believe to be the hardest of Cultivation Styles to learn.