The realistic visage of a heavily scarred, horned demon covers much of this armor. Seemingly crafted from fiendish flesh, the armor seems merely grisly . . . until it twitches.

When you activate menacing armor, you become frightening. Any one creature (your choice) within 30 feet and with fewer HD than you must make a successful Will saving throw (DC 10 + 1/2 your HD + your Cha modifier) or be panicked for 5 rounds. A creature that succeeds on the saving throw is shaken for 1 round instead, and is immune to further uses of this property from the same suit of armor for 24 hours.
The menacing property functions three times per day.

Prerequisites: Craft Magic Arms and Armor, fear.
Cost to Create: 15,000 gp, 1200 XP, 30 days.