Armlet of Satos
This single bracer almost seems to bite into the arm it is on. This armlet first surfaced on (it is unknown as to who did the creating) a nomadic warrior named Satos over 1500 years ago. With its power, he united many tribes under his rule, and nearly succeeded in taking over Gotham.
It has the ability to temporarily increase the strength and vitality of its wearer, but while active will eat away at their life. It will not only make one stronger in combat, but when used properly, it can render one nearly unbeatable.