Giving this 4 stars for now — not because the keycap lacks anything, but because I haven’t been able to fully test it in action yet. I’m currently waiting on my Black Speech CSTM80 to ship so that I can test the keycap.
Out of curiosity, I tried fitting the Flame of Udûn on my old Razer BlackWidow Chroma keyboard just to see if it would work. Turns out that Razer has larger, non-standard stems on the model. The artisan’s Cherry MX stem is too tight to fit safely without risk of potentially damaging the keycap.
With that being said, this keycap is an absolute work of artistry. This review will be updated once installed on my CSMT80 keyboard.