Night Hunter (3.5e Trait)
From D&D Wiki
You gain attack bonus in darkness, however penalty for been expose in light.
Benefit: +1 attack bonus in area of darkness
Drawback: Light Blindness: Abrupt exposure to bright light (such as sunlight or a daylight spell) blinded character for 1 round. On subsequent rounds, they are dazzled as long as they remain in the affected area.
Special: Night Hunters are blessed with ability to see without any light source, not only that but gains extraordinary precision and accuracy when hunting in the dark. However because their eyes are well suited in the dark any light source would stings their eyes.
Roleplaying Ideas: Characters with this trait might wear a night vision goggle.