Curse.
A curse is a supernatural phenomena or form of black magic that causes harm to a person, group or area, ranging from causing bad luck and minor haunting activities to death and demonic invasion.
Description[]
Curses can be cast on people, objects, or entire worlds, either via the work of a wicked or resentful sorcerer or from an act of defilement that causes the god (or similar supernatural entity) to take vengeance on those responsible.
Although dismissed by scientists as superstition, there has been some degree of evidence that curses can work if a victim believes strong enough in their apparent "doom", due to this many compare the practice of leaving behind voodoo dolls or "cursed items" as a fearmongering tool designed to convince someone they are afflicted by supernatural threat.
To reverse or eliminate a curse is called removal or breaking, and is often believed to require equally elaborate rituals or prayers.