Board Thread:Versus Debates/@comment-27429908-20160102030534/@comment-9782468-20160226033229

Only Obito could use Izanagi perfectly, because he had both the Eye power and Body power.

But if the Uchihas were using Izanagi to the point that a counter had to be made (Izanami), it means that Izanagi is still usable to Uchihas, because how would so many Uchihas have obtained the power of the Senju to be able to use it?

But the period in which it lasts for a regular Uchiha is very brief, as opposed to Obito who could use it continually for like, 5-10 minutes.