Board Thread:Naruto Discussions/@comment-24898250-20140730025315/@comment-5407586-20140806085126

Jashin Uchiha wrote: What about Izuna he had two Magenkyo no Susanoo, and Nagato should have been able to use Madara's Susanoo Izuna was never shown using his Mangekyou. Nagato most likely didn't know he could use Susanoo or didn't have Madara's chakra, while Kakashi has Obito's chakra.