A creature struck by a guecubu must make a DC 20 Will save or become permanently cursed with misfortune. The victim of this curse takes a -4 penalty on all attack rolls, saving throws, and skill checks, and any critical threat against the victim automatically confirms. If a guecubu hits a creature already suffering from this curse, the victim must make a DC 20 Will save or be staggered for 1 round. This is a curse effect. The save DC is Charisma-based.