A creature struck by a guecubu must make a Wand save or become permanently cursed with misfortune. The victim of this curse suffers 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 Spell save or be staggered for 1 round. This is a curse effect.