A barely perceptible dark glow surrounds this weapon.

Whenever this weapon scores a critical hit against a target, it bestows a curse that imposes a –4 penalty on attack rolls, saving throws, skill checks, and ability checks for 1 minute. Multiple strikes aren’t cumulative with one another.

Prerequisites: Craft Magic Arms and Armor, bestow curse.
Cost to Create: 9,000 gp (plus 300 gp for base item), 720 XP, 18 days.