The willful bonding was an additive process. Khal Teth had discovered that the mental powers the Twice Bound granted to Jack increased as each new recruit added his or her potential. And because Jack was in charge during the ritual, the Twice Bound were primarily bonded to him. That produced an odd and disturbing side effect. Whenever Jack yielded mastery to Khal Teth, the channeled power of the Twice Bound weakened dramatically.
