This genjutsu blinds the enemy with an extremely bright light that appears to emanate from the user's body. C made Jūgo see the Fourth Raikage and Darui smashing Sasuke into the ground. This genjutsu can control all senses of the enemy.
In the manga this attack generates an electric light emanating directly from C's body, however in the anime the light emanates from around C instead, and it seems to be no electricity involved.
In chapter 612, this technique was referred to as "Lightning Release: Flash of Lightning Pillar" (雷遁・雷光柱, Raiton: Raikōchū).