Check out the Holiday MLP Exchange on tumblr! http://holidaymlp.tumblr.com/

My ref for the exchange. (:

"Evenglow is a gentle, sweet unicorn pony that loves to light up those long, dark winter nights with her magic. Her unicorn power is creating little glowing stars that hang from the boughs of trees, the eaves of houses, wherever you can think of.

She goes out at dusk to start festooning the town and countryside with glows and bringing light to anypony that needs respite from the snowy darkness, from decorating houses and trees with strings of glowing stars to giving carolers light to see by. Her magic wears off at dawn."