Saim-Hann is one of the larger Eldar Craftworlds whose Jetbike-riding warriors are renowned for their wildness and their preference for fast, mobile warfare, striking as a serpent before falling back beyond the reach of retaliation. Theirs is a Craftworld of ancient tradition and a proud warrior culture. In Eldar myth, the Serpent is the only creature believed to exist in both the material and the psychic universes at the same time. Hence, the Serpent is said to know all secrets past and present. Saim-Hann means "Quest for Enlightenment," for the Eldar word for snake and secret knowledge is identical: "Saim." The Eldar of Saim-Hann bear the world-rune that represents the Serpent as their heraldry, sporting it on the cowlings of their jetbikes, grav-tanks and aircraft.