This adamantine breastplate bears an emblem of a wide, staring eye surrounded by raised rays of glittering mithral.

As a +1 adamantine breastplate, this item grants damage reduction 2/—. A breastplate of terror’s damage reduction stacks with damage reduction gained as a class feature (but not from any other source). For example, a 10th-level barbarian would have damage reduction 4/—.
In addition, once per day immediately after you have been damaged by a melee attack, you can activate this armor to render a foe that just wounded you frightened for 1 round. If the enemy succeeds on a DC 20 Will save, it is shaken for 1 round rather than frightened.

Prerequisites: Craft Magic Arms and Armor, cause fear, possession of a piece of the set.
Cost to Create: 6,500 gp (plus 200 gp for base item), 520 XP, 13 days.