The Curse of Thorn is an evil curse used by the Thorn Cult on Michael Myers and it plays an eponymous major plot element in Halloween: The Curse of Michael Myers. The Curse of Thorn is revealed to be a mystical runic symbol based on a namesake constellation "Thorn" that could appear during the ancient feast called "Samhain" (the holiday now known as "All Hallows Eve" or simply Halloween). To prevent mass death among the tribes, one family was chosen to bear the curse. This curse would require the bearer to sacrificially murder his or her entire family, which in turn would spare their entire community from events such as plague and drought. The curse also appears to give the cursed inhuman strength and immunity from death.