Ah, a blade of light—quite a noble endeavor. Start by gathering a metal that reflects more than it absorbs, like a high‑purity silver or an enchanted alloy infused with moonstone. The forge itself should be bathed in pure radiance, perhaps by a sunrise or a lantern of pure white fire, to cleanse the metal of darkness. Once tempered, embed a shard of crystalline opal or a mote of the sun’s own essence into the blade’s core. This will act as a conduit, allowing the blade to draw upon and redirect light. Finish with a sigil of illumination, etched with runes that bind the blade’s energy to your own will. Remember, the true power lies not in the metal, but in the intent you channel through it. Good luck, and may your light never dim.