2018-12-07 : If you target any cards in a graveyard and those cards all become illegal targets, the target player simply shuffles their library.

2018-12-07 : Stream of Consciousness can’t be one of the target cards you shuffle into your library.

2018-12-07 : You choose the target cards; the target player doesn’t. They may offer suggestions.

2018-12-07 : You may target zero cards in any graveyard and have a target player simply shuffle their library.