Board Thread:Theories and Speculation/@comment-4688597-20150529040116

The Rinnegan allows the user to master all 5 basic nature transformations, and Madara could already use Yin-Yang Release. So how come he, or Sasuke for that matter, didn't manifest the TSB? Is there something else needed to trigger it? The Tenseigan also grants them, and Hamura had them, so is all nature transformations all it is? Cause there have been people who mastered them and didn't manifest them. 