Eberron: Soaring Skies of Khorvaire
War Harness of the Champion
This minor artifact fills both the torso and cloak magical item slots. You gain a deflection bonus to Armor Class equal to your BAB/4. Additionally, you gain DR X/magic, where X is equal to your BAB/4. Furthermore, you gain energy resistance 5 to acid, cold, electricity, fire, and sonic.
If worn with armor heavier than light, the war harness of the champion ceases to provide the above bonuses.
This well-worn leather war harness is crowned with a three-spiked left spaulder. Despite looking rather useless, it provides a surprising amount of protection for what it is.