the revival of the hydras

The hydra beasts, 4 ancient monsters, were said to level to cities and together can engulf the entire world in complete and utter destruction. They were tamed by 4 families each having one under their hands. Each family had a struggle of power between one another and would often use their hydras as a means of overpowering one another. Foreseeing the destruction of earth one man destroyed each family and sealed the beast's powers by spreading it between humans. In doing so the man had died, nameless and without glory.