Aasimar

As a standard action, an aasimar can shed light, causing light within 10 feet of him to increase two steps, up to bright, and light for 10 more feet beyond that to increase one step, up to normal. This lasts for 1 minute, but the aasimar can dismiss it as a swift action. Magical darkness can decrease the light level in this area only if it’s from an item or creature of a level or CR higher than that of the aasimar. An aasimar can use this ability once per day, plus a number of times equal to half his CR or level.