Board Thread:Theories and Speculation/@comment-1458758-20150222180047/@comment-3279282-20150223005609

Hidan wasn't featured in the databook, that's why he has no natures listed.

Furthermore, Hidan's unique ability to stay alive even after decapacitation and his unique technique to mirror his wounds on a marked opponent are two different things. He just combines his ability with his Hiden Ninjutsu. Theoretically, everyone could do that, they would just die as a result.