Munin's Feather is a mystical item resembling a large, sleek raven feather with a semi-realistic texture that captures the iridescent sheen of real bird plumage. The feather's vane is detailed with fine, almost imperceptible grooves that mimic natural feather barbules, while the quill is slightly thicker and more robust, suggesting durability. The color transitions from deep, shadowy blacks at the base to subtle blues and purples at the tips, glowing faintly with an otherworldly luminescence when held up to light, hinting at its magical properties.