Respuestas al mensaje #15,199

Well technically speaking as @Mr. Manchester said, they aren't based on class levels, and can be introduced whenever you want.

A mortal attempting descension in such a way is the hook for an entire campaign, not a blurb in a source book.

What you want for that in particular are the apotheosis occult rituals. The chain goes attract patron> fleshgraft blessing > half fiend template >...