They made the valravn seem super scary and cool in this expansion. I wish the reality of them in the game matched. They're just regular griffons or harpies as far as I can tell. It's pie in the sky I'm sure, but I hope they make new models or skins for them in the future updates!
Nice video. I had no idea about the real mythology around it. It's pretty cool how they took a single figure in myth and made a species out of it.