Okay. So it stretches even further back.
I think it's amusing she watermarked it and then the credited source took it off her feed and cropped it.
At this point, I think crediting scans of images should just go to crediting Games Workshop, since they created the book that's being photographed. Then we don't have these little rumormonger wars, amusing as they are.
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They might be focusing Nurgle back onto despair and nightmares again. The Horned Rat has always been sort of a "Chaos" god, and ended up being added into Chaos in the Old World, then you have the events in End Times... He's sort of a mix of Nurgle and Tzeentch with the blight, pestilence, and shifty tricks. But he's always been that way, as long as Skaven have existed, which is nearly as long as Warhammer's been around.