Blood Blade
this knife was created by the Dark Jedi of the Krath, who imbued the blade with the energy of the Dark Side of the Force. The blade itself was created from steel fibers that had been woven together with cortosis, giving it the ability to withstand a lightsaber blo. The blood blade was the chosen weapon of Krath assassins. The blood blade and its cousins were among the most ancient weapons of the Krath, and many Sith historians believed that their original formation predated the development of the lightsaber.