Lights comprise about 1.5% of the sapient Elcenian population, and manifest at age 5 (humans) or the equivalent. Their power is to conjure a globe of colored light in their cupped hands (color varying from light to light). Contact with this globe heals any non-light of the overwhelming majorities of diseases, injuries, and other cases of poor health, and informs the light of what he or she has cured. Lights cannot heal themselves or other lights.
In addition, lights can photosynthesize in the sun. While they do not need to eat any solid food if they have enough time in direct sunlight, they do need to drink more water than non-lights.