Random Magic Armor (any level)

A shield with this enchantment flashes with a brilliant light up to twice per day upon command of the wielder. All within 20 feet except the wielder must make a Reflex saving throw (DC 14) or be blinded for 1d4 rounds.
Aura: Moderate evocation
Caster Level: 7th
Requirements: Craft Magic Arms and Armor, Blindness/Deafness, Searing Light
Price: +1 bonus
Source: Dungeon Master's Guide v.3.5