Sage

An individual who is able to utilize Senjutsu (仙術, Sage Techniques), and has mastered the art of Sage Mode is called a.

Senjutsu
Very few people are shown to master senjutsu. Naruto and Jiraiya are the only two human beings who are seen using it. This is because both learning and using senjutsu is not safe; death may easily occur while learning to use it. There are many toad sculptures on Myōbokuzan - these are petrified shinobi, who wanted to master it.