Cursespewing [Property]

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: Varies.

Source: Magic Item Compendium, page 31.