The Book of Truth:

This artifact may only be used if the Quill of Truth artifact is equipped. This artifact has five charges, and regains one charge each time an artifact of any quality is sacrificed while it is equipped. If the Quill of Truth artifact is used while the Book of Truth is equipped, one charges of this artifact may be spent to increase the duration of the pact by 1d4 sessions; multiple charges may be spent immediately when a pact is formed. This artifact protects the wielder from the negative effects of having multiple pacts from the Quill of Truth artifact alone.