Ninja Spinners
Ninja Spinners are circular saw razor blade looking things that get spun out into the field to shred your energy field, and try to burrow a hole in your body. They are very malicious etheric weapons. We have buffer fields now that protect us, however, one has to take the "bait" (engage with it) in order to be hurt by them. The lesson with these is never engage with them.
References
Lisa Renee
Term first found in HGS Manual: Page 185