Actually...
Two tomoe will also allow the ninja to pierce Genjutsu and see the surrounding reality for what it really is. It can also allow the member to pierce another's body and see their chakra. While the eye is not refined enough to see the tenketsu and chakra circulatory system like the Byakugan, it can view the movement and flow of chakra. This can help them tell if a person is trapped in a Genjutsu, or if an attacker is a real threat or merely a bunshin.
I also didn't make A SHADOW CLONE. I made just normal clones.