Board Thread:Naruto Discussions/@comment-26636534-20180325094649/@comment-34752936-20180325124006

Mr. Grave wrote: He is definitely the most powerful genjutsu user that is not also a primordial god. But his Genjutsu: Sharingan can be broken. It's his use of Tsukuyomi that gives him some serious potential. That and the fact that he can set up his jutsu for delayed activation, making him the first Uchiha to do so onscreen.

I don't think he is the most powerful genjutsu. I think,Shisui is. His normal genjutsu can be a serious hindrance to any user (except the uchiha ofc). It was also said that if 2 Tsukuyomi is recieved,you can die in the fraction of a second. That's how powerful Tsukuyomi is. It can be,either,happy which was in Izumi's case or sad. In the third databook,his genjutsu was rated 5 which is remarkable. We haven't seen anyone break Tsukuyomi except Sasuke,i'm pretty sure Itachi let him out,though. So Itachi's genjutsu can be broken as seen in when Bee breaks out of Itachi's genjutsu. Izanami is just HAX. Koto can only be used once a decade.