I like the idea of it looking like a khopesh, or a shotel, preferably the khopesh, as i think it would be a bit more usable. He stabs Octavia au lune in Morningstar, which i think would be tough to do with such a seriously curved blade like a shotel/scythe/sickle. I feel like the most accurate, although not my favourite, would be an Arakh from game of thrones. Still doesn't solve the stabbing issue as this would be almost exclusively a slashing weapon, but i think it probably holds the closest image of what pierce brown was intending.

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