A 3D model of a mysterious ancient alien karambit knife with a sleek, curved blade, glowing with an otherworldly energy. The blade is forged from an unknown, iridescent metal with shifting, intricate patterns. The handle is ergonomic, designed for a perfect grip, and adorned with alien symbols and advanced technology. It has subtle glowing elements, pulsing with faint light. The knife should appear both functional and ceremonial, showcasing extraterrestrial craftsmanship in a detailed