The Dawn Blade is a weapon wielded by Commander Farsight of the Tau. He found it in a mysterious temple on the world of Arthas Moloch, using it to fight creatures that were almost certainly Chaos Daemons. It flickers with unknown energy and when he swings it, sharp enough to cut through rock, it cuts a swathe easily through most enemies and armoured vehicles. Unknown to its wielder its blade is made from chronophagic alloys which add a slain foe's remaining natural lifespan to that of its owners. This is the secret of Farsight's remarkable longevity, which has spanned to over three centuries.