[@Necroes][@Jbcool] Alright, now hopping off of what Jb said, [url=http://wh40k.lexicanum.com/wiki/Death-Masque]I found the Lexicanum page for the death-masque servitor.[/url] First of all, I was thinking of something else, probably the Skulker Configuration servitor, which is specifically intended to cause massive terror and disruption in Imperial populations. Secondly, it apparently uses tech specific to a particular forge-world, which may well be non-present on a spaceship made entirely of wraithbone. So, whilst a fancy as fuck idea which I do like a lot... it miiiight be a bit unlikely in canon, as Jb has already said.