Light of Grace

Light of Grace is a Legendary Source for the  in Diablo III. It requires character level 31 to drop.

Its most notable feature is amplification of the Ray of Frost spell, resulting in the beam piercing through all targets up to the maximum length, like Disintegrate beam does. Each target forms a separate blast when hit by a beam (not by another blast). Obviously, it has no effect on the Sleet Storm rune.

Trivia

 * Multiple braziers like Light of Grace are scattered around The Vault in the Treasure Realm.