Quick question, although I doubt there's a great deal about it out there.
As part of my general worldbuilding I wanted to know a little more about the mutants/gene-forging that the Raven Guard undertook during the Horus Heresy. I know it was successful at first, but corrupted by the Alpha Legion which resulted in a number of issues with their gene-seed and the creation of a large number of mutant rejects which they armed anyway and used largely as meatshields.
Anyone know anything else about the mutant rejects?
Bonus points for if anyone has actually modelled some