Lore...

On the battlefield of an ancient long forgotten realm, a metal cube hummed with quiet mystical power. Each of its six faces bore a spinning die, shifting from four to twenty sides in random fashion. When the renowned Cavalier, Beldar, grasped it, and the cube chose for him. Steel sang as his strikes sharpened, then blazed again with impossible grace. A spin granted his mage ally, Rankor, torrents of hellfire. Another spin dimmed the magic of foes out of existence. Chance ruled every heartbeat. In the end, the cube spun once more, landing on 20, and their foes broke like glass before a storm of fate.