As the bell chimes twelve Kaspar calls upon Samiel, the Black Huntsman, for assistance in casting the magic bullets. Having already sold his own soul, which is due the next day, Kaspar offers Max’s soul in exchange for a prolongation of his soul of three years. Agathe is to be killed by Max's magic bullet, despair will then make him the Devil's, him – and the father. Samiel agrees ambiguously: "So be it – By the gates of hell! Tomorrow he or you!"
As Max arrives, the spirit of his mother warns him to abandon the project. But Samiel conjures up Agathe, seemingly drowning herself in despair, whereupon Max plunges into the glen. With demoniacal noise, the casting of the bullets begins.
[...]
Max takes aim, fires and Agathe, who has just entered the scene, falls as if hit. But her bridal wreath and the hermit behind her have deflected the bullet. It strikes Kaspar. Agathe revives from her faint and Kaspar, seeing a holy hermit by her side, realizes that he has failed. Samiel grasps him instead of Max, whereupon Kaspar expires, cursing hell and heaven.