u/BadHerlaye

I don't know how to put this or phrase this well so I'll jest explain it best I can.
I'm playing as a Hunnic steppe nomad, trying to do an Attila the Hun thing, and I managed to expand the realm until I could become greatest of all khans, I beat the war of defiance, I gained the Mongol Empire title, I got everything that goes with it EXCEPT the legend seed, I was wondering if there was something I was missing. I tried to look up why I wasn't getting the option to start spreading the greatest of the khans and there's no information from anyone else other than "its just not there"
if anyone knows why I can't start it or knows the specific console command to start it, I'd love the help, its just stumped me so far.