Board Thread:Naruto Discussions/@comment-25051328-20140818021248/@comment-24519434-20140820084953

AsianReaper wrote: If Sasuke had Tsukuyomi, why didn't he use it when Itachi and him got each other out of Kabuto's Genjutsu? He used a regular Sharingan Genjutsu while Itch used Tsukuyomi.

I think Sasuke doesn't have it.

Conserve chakra, something the ET Itachi didn't have to worry about, Itachi had high reserves of chakra and he could only use it three times a day. A clone of Itachi with 30% of his chakra couldn't use it once.