Board Thread:Middle Earth Roleplays/@comment-25356210-20151209204922/@comment-27718380-20151226225717

Perhaps the elves created versions of themselves that were sorta half sentient, like robots. Some of these became sentient, and gained a fair bit of power while the elves were unaware. As their numbers grew, the elves just fed them. When they realised their mistake, it was almost too late. (And thus laziness is the root of all evil.)