Does Dark Aura stack?

Didn't find a thread regarding this nor does the search tool work. Can two people cast Dark Aura on the same ally for double shadow damage when he health sacs? Naturally I would test this myself, but I'm not at the game for a couple days and figure someone who already knows can respond quick enough.

enchants do not stack, the stats of the last applied enchant is used. Try it with HB or mending. =O echo mending.