Dueling blades were used in a game called sha'je, a violent dueling contest popular during the Collapse, when the Dark One's influence awakened the darker side of human nature and caused society to degenerate. The participants used twin blades, the right called aran'gar, the left named osan'gar. In the years immediately preceding the final collapse into war, murder, rape, and even torture became regular parts of many spectator sports. This game was particularly vicious, as both blades were coated with a slow poison, so that even the victor seldom survived. Because of this fact, the game is thought to have been started or perpetuated by Friends of the Dark.