Ricker

From Sword of Truth Wiki

Ricker was the wizard who created the Sliph, and one of the Temple Team, who came to regret his actions in the past and hoped to prevent others from making similar mistakes by sending away the Temple of the Winds.

Wizard Ricker also is the one that chose the woman that weoould be tyhe test subject and he knew from experience that she would not give up information on her clients.