Quivering palm

The Quivering Palm is a spell or incantation used by Kane for dominating enemies. The spell is enhanced by a magical item, such as a ring, and activated through meditative incantation. A spectral hand will appear next to the subject, lightly brushing him or her. Though the subject doesn't feel different, the monk can now control the subject's body and emit pain and paralysis at will.

"Emelyn the Gray to Artemis Entreri: "Picture your life energy as a cord, stretched taught from your head to your groin. Master Kane now holds that cord before him and he can thrum it at will." "

- R.A. Salvatore, The road of the Patriarch

Its effect are not permanent and wear away after a certain amount of time but the spells effects can be released on will by the enacting monk as well.