Flesh Ring of Scorn

Barbs protrude from this tiny iron ring.

To gain the benefit of a flesh ring of scorn, you must wear it as a piercing through the flesh of your upper chest. You can activate it whenever you score a critical threat on a creature. The critical threat is automatically confirmed, but the flesh ring of scorn deals damage to you based on your weapon’s critical multiplier.

A flesh ring of scorn functions three times per day.

Prerequisites: Craft Wondrous Item, corrupt weapon.

Cost to Create: 4,000 gp, 320 XP, 8 days.

Source: Magic Item Compendium, page 100.