Azora's Will

Azora's Will is a green-quality item that is found all over the world and is useful to casters, especially healers, wishing to increase their mana pool. It has the highest intellect rating for a ring its level.

Source

 * This item drops off of 25-28 mobs in a variety of zones including Duskwood, Wetlands, Thousand Needles, and Hillsbrad Foothills, amongst other places.
 * High reports of drops are reported in instances such as Razorfen Kraul, Shadowfang Keep, and Gnomeregan.
 * While may low level players thirst for stamina rings, this ring is excellent for paladins, priests, shamans, and druids looking to boost their mana pools.