Limbo: Border Jail

Using the power of the Rinnegan, the user projects an invisible version of themselves into the unseeable world known as. A Rinbo is generally impossible to sense or visually perceive without the Rinnegan, however Kurama's ability to sense negative emotions can detect it as well. Although typically invulnerable to most physical attacks, techniques which make use of Six Path or Sage chakra can cause harm to a Rinbo.

The downside to this technique is that the user's Rinbo, after a set period of time, automatically returns to thier body and it is left temporarily unusable. Any damage which the Rinbo had sustained would be projected onto the user upon its return to them. Madara's Rinbo was strong enough to repel all nine tailed beasts in a single instance.

Trivia

 * Both the first word's furigana and the second word  refer to the Limbo, with リンボ being the Japanese way of writing Limbo and 辺獄 being an actual translation of the word's meaning.