Board Thread:Theories and Speculation/@comment-3001903-20160803001752/@comment-25122992-20160803110856

Once I was also wondering about this question, and Rinne Tensei isn't the only one of it's kind. I mean, it should be questioned if the ET-shinobi (basically, an immortal zombi) could use the techniques which usually take the user's life to as a price. Such techniques include not only Rinne Tensei, but at least Eight Gates Released Formation and Dead Demon Consuming Seal.