Band of the Eternal Defender

Band of the Eternal Defender is a quest reward from the following quests:
 * Defender's Covenant
 * Sage No More
 * Restorer No More (Hyjal)
 * Champion No More

As a quest objective

 * Defender No More

Tips
One difficulty with the Band of the Eternal Defender is that it overwrites the buff from a Scroll of Protection V.