Board Thread:Versus Debates/@comment-36006024-20180719181710/@comment-25607614-20180730012300

Madara's immortality is way over-hyped around here. His regenerative powers stem from the transplantation of Hashirama's DNA into his body. Becoming the Ten Tailed Jinchuriki enhanced that, of that there is no doubt, but when he stated that he's immortal, he has literally no basis of proof for knowing that. Nobody with Hashirama's cells had ever achieved that before. He was just talking out of his butt because he's arrogant.

There are some obvious upgrades to the power, in that the regeneration is clearly superior. That doesn't mean that it doesn't have limits. If the healing process requires chakra, and we have to assume it does, since Madara compared it to Tsunade's healing ability, then it can run out.

Also: We know he can die... because he died.