Retributive amulet
(Magic Item Compendium, page 121)
Price (Item Level): 9,000 gp (12th)
Body Slot: Throat
Caster Level: 5th
Aura: Faint; (DC 17) abjuration
Activation: Immediate (command)
Weight: ½ lb.
This inch-wide disk bears a large red crystal in its center. Tiny carvings around the crystal show an endless march of angels and demons at war.
You can activate a retributive amulet immediately after another creature has dealt damage to you with a melee attack. That creature takes damage equal to half the damage it dealt to you. This damage is of the same type (or types).
This ability functions three times per day.
Prerequisites: Craft Wondrous Item, shield other.
Cost to Create: 4,500 gp, 360 XP, 9 days.