Complex sentence: He tries in a desperate attempt to dissuade his classmates from performing the charm, but he joins them, since he doesn't want to let them go alone, sending them on alterative course of actions and encountering several supporting victims in Heavenly Host.
Split into simpler sentences: He tries in a desperate attempt to dissuade his classmates from performing the charm, but he joins them, since he doesn't want to let them go alone. Sending them on alterative course of actions and encountering several supporting victims in Heavenly Host.