Six Paths Yin Power (Sigma)

This seal, is given to one who posses the power of the. was the first to bear the seal, as the son of the Sage.

Overview
It appears that a user gains this marking when the Sage passes on his power onto the target. This was first seen by, which he later showed the his gaining of the Rinnegan. Giving theory that his yin power gives the target. This seal was later named by Shingi, which also gave him the ideal base for Operation Samsara.