  To mix threads, there's an interesting discussion going on in the Callandor thread about the warding that prevented anyone but the DR from accessing it. What if, instead of a single-person-allowance, this ter'angreal was created with a trigger that would only be "pulled" if a person from one particular denomination attempted to use it. Then, when the first threshhold is crossed, that person gets access to their own genetic history, whether that's via Mirror Worlds, Blood Memory or accomplished in a way similar to how the Aelfinn and Eelfinn operate.  