Given the ambiguity, I'll offer a few speculative areas where a guide might be relevant, and you can let me know if any of these align with what you're seeking:
When they finished, the shield looked like no other in Darriyah: a warm bronze disk with a glass-eye at its heart, edged in golden leather and faintly scented of cedar. Fuladh called it al‑Haami—the Protector.
The Recruitment: A Hidden One discovered him while he was hunting with his avian companions. Impressed by his unique abilities and self-reliance, the Brotherhood recruited him.
He lost 3,000 men. The rest fled.
As modern materials science looks back to ancient wisdom for inspiration (such as "bio-inspired" steels with gradient hardness), the forgotten recipe of Fuladh al Haami offers a tantalizing clue. Could we once again produce a steel that bends like iron, yet cuts like glass? The answer lies buried under the sands of Khwarezm, waiting for a curious metallurgist to resurrect the craft of the protectors.
