Light Leaping is a common method of transportation when an elf travels on a beam of light. Their bodies break down into tiny little particles. Leaping crystals are used for this process. The crystals manipulate light in a specific way so, depending on what facet is used, it can take you almost anywhere, exception to underground and underwater, since you can't leap through water or rock. Light from the unmapped stars will make this possible. Nexuses are used to keep all of the particles together so you don’t fade away during light leaps. Once the nexus bar is at 100%, you are able to take it off and get a Pathfinder. The Ancients used Starstones to create their paths before leaping crystals were invented. Now, home crystals and Leapmasters are used until an elf can prove that they're responsible, mature and trustworthy enough to be issued a pathfinder. Even then, certain pathways are restricted, and the color of the crystal determines where the light will go.
Fading can occur when a person does not have enough concentration to leap and does not have a nexus or for various other reasons that would cause them to lose part of themselves. As a result of this, murder by light leap is possible in two specific ways. If someone broke the leaper's concentration by inflicting pain upon them or breaking their concentration in any other major way, it would break an elf's focus through a key part of the particle transformation. An alternative way would be shining another light, which would hence lead to the person leaping to two places at once leaving not enough of them in either place.