Promethium Swords

Promethium swords are Deathstroke's main lethal weapon of choice. He has been shown using both twin katana and a single broadsword with deadly skill. The promethium metal has the unique ability to absorb nearly a limitless amount of energy and when made into a weapon like a sword allows the sword to take blows of any strength without breaking. This makes Deathstroke's weapons indestructible against conventional attacks. The hilt of all of his weapons bear a fuinjutsu trap, if anyone but Deathstroke grabs them the fuinjutsu will activate and release a shock capable of incapacitating anyone for a long period of time.