This scythe is a show-invention. While a nice visual, it feels like an exaggeration simply for the visual effect: one supposes a chain weighed down by, say, a couple hundred pounds of rock or metal would be fairly similarly destructive. Admittedly, it is a strange critique in the face of an 800 foot tall wall of ice, but it feels like the novel strain credulity enough in terms of out-sized architecture not to pile yet more on top of it.
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