2011-01-01 : If the first card the player reveals is an artifact card, they will still have to shuffle their library even though no other cards were revealed this way.

2011-01-01 : If the targeted artifact is an illegal target by the time Shape Anew resolves, the spell doesn’t resolve. Nothing else happens.

2011-01-01 : If the targeted artifact’s controller can’t sacrifice it (due to Tajuru Preserver, perhaps), the other effects of the spell will still happen.

2011-01-01 : If there are no artifact cards in the player’s library, all the cards in that library are revealed, then the library is shuffled. (The targeted artifact remains sacrificed.)