1)The Sage of Six Paths (Hagoromo), Uchiha Madara, Uzumaki Nagato and Uchiha Obito.

2) First by Kakashi, second (and his main one) by Shikamaru (using Hidan as the actual perpetrator, but the plan was Shikamaru's), third and fourth by Naruto and fifth (the one that previously was the Lightning mask) by Kakashi.

3) SIx in total, three for each vase.