If it is any cold comfort to you, know that trying to justify the Emperor's words referring to Corax in the RH is as difficult as trying to justify his behavior with Angron in canon 40K. Still, that doesn't mean the story can't be fine-tuned.
Also, I have different fates in mind for Corax, Sanguinius, Lion and Russ - the sort that you might not expect.
Also, I have different fates in mind for Corax, Sanguinius, Lion and Russ - the sort that you might not expect.