<font color=gold>Well, as for Pippin being drawn to the stone. I think that just has a lot to do with the fact that Sauron's power was breathing in it at the time. It's sort of how they are drawn to the Ring as well. I imagine Sauron's power would have the same affect on anyone who would gaze into the palatir.
As for the master stone. I thought that it was lost, so I don't know how to answer this. I'm sure one of our more scholarly members can jump in.
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