The product of messing with the ichor of Nevun and providing it a bit too much essentia to do something with. The ichor forged the soul of a creature whose purpose is to find more. It imprinted some level of incarnum knowledge and decided that it could use this stuff for other purposes. Craylin represents the ichor's new appetite to feast on souls just as well as flesh. She has the unique ability among silnian creatures to harvest and store essentia and her drones often share this same augment.