SkekTek the Scientist kept some real power of thought, but in truth he had become only a juggler of ideas, of memories from his previous life. He had studied the light of the Crystal and used it for the division. And he studied the wounded Crystal, and by that light he saw his ways to acts of darkness. First, he learned the art to make beams of light from the Dark Crystal, which he burned into the eyes of the Pod People and Gelfling to make them his slaves. After the light had struck them, no light lived in their eyes, but they obeyed. And the second evil was to use dark light to draw the essence of life, to drain it from the living to make a drink for the Skeksis, above all for the Emperor. This essence gave them back their youth and vigor for a while, only for a little while; but many Gelflings were victims forever.

Metal and stone and beams of dark light: hyssop, black currant, black viola, passionflower, and myrrh.