The key was unlike any ordinary key Kaelen have ever seen, its odd appearance immediately catching the eye. It was made of a mysterious, dark metal that seemed to absorb light rather than reflect it, giving it a foreboding presence. The shaft of the key was intricately twisted and gnarled, resembling the roots of an ancient tree, with strange, almost runic symbols etched along its length.
The bow of the key was a peculiar shape, resembling a crescent moon interwoven with delicate filigree patterns that hinted at an otherworldly origin. At the center of the bow, a small, glowing gem pulsed with a faint, eerie light, as if imbued with some dormant magical energy. The gem's color shifted subtly, from a deep emerald green to a vibrant azure, depending on how the light hit it.