This item bears a stylized elemental motif. However, its flanges and spikes indicate that it has some offensive capability as well.

This armor continues to give you the benefit of its prerequisite property. In addition, while wearing or using this kind of armor or shield, you can wreathe it in the type of energy specified by its energy resistance. While this effect is active, any creature that strikes you with a natural weapon, unarmed attack, or nonreach manufactured melee weapon deals normal damage but also takes 1d6+10 points of energy damage of the specified type.
The energy defense property functions three times per day. The effect lasts for 5 rounds or until you dismiss it (a swift action).

Prerequisites: Craft Magic Arms and Armor, fire shield, resist energy.
Cost to Create: 500 gp (plus 150 gp for base item), 40 XP, 1 day.