Okay so Queen of the Sea Au
What if Alastor gave Adam the map to Lilith's crown in the hopes it would kill him since the crown is considered cursed and highly dangerous. And also considered a myth.
Oh yeah. And even if it wasn’t real (which he fully believed it wasn’t) he hoped it’d at least be enough fuel for him to keep throwing his life over a ‘legend’.
Well it did kill human Adam.