Board Thread:Theories and Speculation/@comment-36512555-20190422151037/@comment-32685487-20190423183552

Itachi's mastery with the Sharingan hasn't been matched yet. He can have his Sharingan active near constantly desite his lowered chakra levels. The Mist using Jutsu's are the only jutsu Gengetsu's that could give a problem to the Sharingan only because of the chakra in the air. But this is Itachi and something like that could never stop him, he's too intelligent and strategic for that.