Dude! You've got NINJA scrolls?!?!
OMG! That is soooo cool . . . I read that they were TOTALLY into Mikkyo (Secret Teachings) which is where they got their REAL cool powers to disappear and stuff. This goes WAY beyond Ten, Chi, Jin, I mean they had it going on which is why the word "Ninja" struck fear into the heart of any samurai soldier.
Well, that and the way they flip out and go on a killing spree when anybody points out that the real enlightened masters know that Mikkyo totally means three tea