These hard leather armguards look sturdy, yet flexible.

Bracers of retaliation protect you from attacks and punish attackers for injuring you. They grant you a +1 armor bonus to AC (as bracers of armor). This is a continuous effect and requires no activation.
In addition, when you are dealt damage by a melee attack, you can activate the bracers and sacrifice an arcane spell or spell slot of 1st level or higher to daze your attacker for 1 round. A successful Will save (DC 10 + the level of the spell sacrificed) negates this effect. This effect functions three times per day.

Prerequisites: Craft Magic Arms and Armor, Craft Wondrous Item, daze monster, mage armor.
Cost to Create: 2,500 gp, 200 XP, 5 days.