Riddick's Necromonger Armour
After re-watching the movie a few times, I'm scratching my head wondering what is that awesome piece of Necromonger head gear Riddick is wearing on his head, it's like a helmet with claws wrapped around the face.
Anybody got any ideas what it's called (in medieval terms) as I'd like to buy one or is it specially designed for the movie? Here's a pic of it: http://www.scifiworld.es/images/galerias/films/Riddick/chronicles-of-riddick-08.jpg