Quote (Vicc @ Aug 11 2012 02:51pm)
Aren't those something only Itachi could use? The only reason Sasuke can use them now is because Itachi implanted them in Sasuke before dying.
madara used susano
soo unless sasuke/ itachi are a direct blood line of madara " i.e with in the clan there are still unique blood lines for the wide range of shargian / MS abilities"
then susano should be pretty common for people who activate MS