Originally posted by: Kumiriko
Maybe there is a higher lv of Kage Bunshin that naruto dint learn that made it forbidden. like some way to make them Identical in stregth and Chakra and able to take as much damage as naruto. The fact remains we wount know untill they go into more detale in this area
I'd have to agree with you on this assessment. I believe that the higher form of kage bunshin is called, brace yourself, "Hokage Bunshin." It is the forbidden ability to shadow replicate the former hokages, divide chakra evenly through them all, makes them very durable, and they are able to use all of their past jutsus. You see, in the scroll there is a blood pact on it. You must sign your name in blood.

Kage bunshin was one of the many training steps to achieve the prized "Hokage Bunshin."