Needs review
Source: Book of Exalted Deeds

Description: You are cloaked in a radiant light that marks you as a servant of the purest ideals.

Prerequisites:

All who look upon you know without a doubt that you are a champion of good and are favored by the powers of the Upper Planes. The nimbus may take the form of a cloud surrounding your entire body, or it may appear as beams of light around your head.

Good creatures automatically recognize the radiance surrounding you as a sign of your purity and devotion to the powers of good. You gain a +2 circumstance bonus on all Diplomacy and Sense Motive checks made when interacting with good creatures.

Your radiance sheds light as a common lamp: bright light to a radius of 5 feet and shadowy illumination to 10 feet. You can extinguish this radiance at will and reactivate it again as a free action.

Special

This is an Exalted Feat. Only intelligent characters of good alignment and the highest moral standards can acquire exalted feats, and only as a gift from powerful agents of good—deities, celestials, or similar creatures. These feats are thus supernatural in nature (rather than being extraordinary abilities, as most feats are). A character must have the DM’s permission to take an exalted feat. In many cases, a ritual must be performed; often this simply amounts to a character swearing a sacred vow, for example, in the presence of a celestial being. A character who willingly and willfully commits an evil act loses all benefits from all his exalted feats. She regains these benefits if she atones for her violations.