The Grimoire card is Rasputin 2. So, there's that. Also after "it" uses it weapons the Hunter says (who narrates it) that she remembers something about the Array opening, and "a ghost of the Cosmodrone set loose", which I thinks confirms it as Rasputin. And I don't doubt that Charlamagne is, alive? I don't know how that works, but anyways, I'm just saying that Warmind in that Grimoire card I don't think is Rasputin. I will say you've made some good points and I can see where your coming from, and I think, and this is really reaching here, but what if we somehow contact Charlamagne or quite possibly got to Charlamagnes vault in RoI. We know the original place you could find the Thorn was going to be this vault but obviously that changed. And now with Thorn having a quest it's a possibility we'll go here. Edit: I was going over the card again and saw something kind of cool. It mentions a Centurion saying "Black Shield, Black Shield, Firebase Thuria", presumably asking for reinforcements, which I thought was kind of cool. I was going to say maybe it was whoever the warmind was killed everyone there, but I think it's a little too "intact" for that. So the Vex took it out. I just think it was a cool fact.