Tabard of the Lightbringer

The Tabard of the Lightbringer is a epic bind on equip tabard with a use feature, suffusing the player with Light for 5 minutes. The tabard itself displays the symbol of the Knights of the Silver Hand, an order of paladins formerly led by Uther the Lightbringer.

Source
The Tabard of the Lightbringer is a reward from The Lightbringer's Redemption.