"Here, let me introduce you to my religious death cult, there's one entry requirement, you have to die first ..." ;)
"or, "Let me introduce you to the politics of the Underworld. Don't worry about staying alive, soon fix that! *kekekeke* (This is as close as I could get to a bony skeletal laugh, apologies if it comes across wrong.)
Both parts of my lines for him above have portions of their sentence that have to do with certain movies I've seen, slightly modified, see if you can identify them! ;)
The first line, last part, comes from Cirque Du Freak (2009), the dark fantasy film adaptation of the book series The Saga of Darren Shan by author Darren Shan: The Vampire's assistant: When Darren is killed by Crepsley after agreeing to join, Crepsley tells him "you have to die first" and kills him.