Hear me out!
An au where Lucanis and Spite manage to break out of the Ossuary way earlier than in canon but!
They had to really tap into their connection/possession to do it and not be immediately overwhelmed with blood magic. Which led to Consequences
So now Lucanis has actual, physical wings and not just those black spectral ones. And feathers growing from other body parts. And claws and more eyes than he should, in places where eyes don't belong.
You know, the properly eldritch abomination look.
Since Lucanis cannot go back to Treviso looking like that and since Spite really wants to kill Zara and all others who hurt them...
Minrathous has a new demon haunting it but this one seems to have it out specifically for the Venatori.











