He's been barely injured at all. Besides the time with Konan.
And against the aburame clan member with nano insects... and against minato.
about tobi beeing an edo tensei by tobirama, i don't think that is true. Why would tobirama bring back someone that is so intent on controlling everyone with the "eye of the moon" plan and hunt bijus and bring back madara who was their enemy?
this is not something Tobirama would do, considering the fact that Tobirama followed the teachings of the first hokage which is safe to assume.
And Tobi seems much more "evolved" than the edo tensei that orochimaru used. Kabuto perfected tobiramas jutsu even further and gave them a will of their own (if kabuto let them), which is similar to what tobi has But the edo which tobirama created did not have emotions (this fact is from when hiruzen fought against the first and second). which means that if tobirama created tobi, he would not have a will of his own nor any emotions. hope you understand me there.
