It seems Nagato can handle Rinnegan but Obito almost lost himself. how come? Nagato is Uzumaki but Obito is Uchiha/Senju. does this mean uzumakis are better than both
Remember at the Kage summit there are five kages. Hokage, Tsuchikage, Mizukage, Raikage, Kazekage..
But Orochimaru has his own village called the Sound village. So it's a Soundkage.