Ravenlord. I am a bit... disappointed they moved away from the "Corax:___" title, as I thought they were going to keep from Soulforge, but titles aside, the novella was great.
As beautiful as the matte black covers are, they get finger prints in them far too easily, so I am glad they moved away from that, and went with the black feathers falling on a black background for the cover. It was a beauty! And that isn't even talking about the cover art for the dust jacket done by Neil Roberts, which is a beauty to behold, truly.
The internal extras were kinda meh in this one. I liked the combi-weapon schematic but it was still kinda boring. A slightly larger melta gun really. The one piece that really piqued my interest was the interview with Aloni and the bit at the end about the Imperium's discover of the Raptors. I would really like to see more of Aloni and the Shadow Wardens as well as learn about the fate of the cursed Raptors.
The story itself was pretty damn good. Corax gets to be a leader and has to make some tough calls again, and his conscience warring with what he must do to try and destroy the enemy while saving the Imperium.
I feel like Corax really developed in this novella. Before we saw him as a general and the Raven Guard his soldiers. With Aloni returned, we get to see some actual humanity, for want of a better word, to Corax. His men ignored his orders and were disobedient to the point that Corax actually might have considered them traitors, but it was all to save him. The twist towards the end was great, and the spite in that act was chilling! I really can't wait to see where Gav takes Corax and the Raven Guard from here.
The action was as great as you would expect, and some of the traitors weapons/units were pretty cool. The lightning gun and warp rifle were awesome.
The one thing I didn't like was that some of the Emperor's Children/Sons of Horus ran. They fled from Corax. While Corax is definitely above the level of rank and file marines in terms of ability, I feel that it makes the "bad guys" seem worthless. You can make your "good guys" and main character badass and awesome without making their enemy seem incompetent. This happens a lot in Black Library fiction, where the protagonist is awesome and defeats the antagonist because they suddenly act out of character. A huge point in a lot of their fiction is how the Adeptus Astartes are fearless and stand their ground against all odds. I feel like Sons of Horus and Emperor's Children wouldn't just run away, a tactical retreat sure, but not the flat out panicked retreat. Though I may be biased as a Traitor fan!
Other than those few scenes the whole novella was great. The presentation, the story, etc.
I really liked the sneaky infiltration before all hell broke loose.