The cheapest Blood Host is a Slaughtercult plus a standard Helbrute. So if I want to get a Blood Host into a 500pts battle, a Helbrute seems a good choice! As I had Dark Vengeance sitting around, this was a quick-and-dirty addition to the force.
This model really wasn't modified much. One leg was sawn off at the hip, and stuck back on in a slightly more dynamic running pose. The head is from a jugger. But that's it. Was tempted to modify the arms, but it all seemed like far too much bother. If I make a second one I will!