Limbo: Sin

By utilizing the power of his Rinnegan, Sigma is able to cause sin onto his opponent, which cause a deviant pain upon that said part. One without the Rinnegan, is incapable of seeing the "invisible" Sigma.

Usage
Sigma first begins to focus his Rinnegan, and around the body an "invisible" spot, which has vanished into the invisible world of Limbo (輪墓, Wheel Grave), will appear upon his opponent. This method can be used at any time in battle, and his opponent won't even know, when he's did it. Once he's placed the "sin" onto his opponent, and is ready to start the technique, his right eye will begin to bleed. The more pain he emits onto his opponent(s), the more his eye will bleed. The damage the foe takes is internal, and they won't take the damage until Sigma states the command; "Sin" or "Tsumi".

This technique is significant, because the damage is already placed, it's just at any moment Sigma can finally move the damage from the "Wheel Grave", to the physical, or outside realm. This is actually an advantage for Sigma, as his opponents could grow confusion, as they attempt to figure out why his eye would bleed, with no usage of the Amaterasu.

Weakness'
A major meakness of this technique, is that one must wield the Rinnegan, in-order to be able to see the sin that is laid onto them. However, one with a Byakugan, too can see the chakra that is gathered around the particular location of themselves or the target.