Ghostly Apparition Technique

An advanced sensory ninjutsu utilized by certain members of the Yagyū Clan.

Usage
Using this technique, the user can transmit a portion of their chakra through an, creating a small specter which is both able to send visual information to the technique caster, as well as sense surrounding chakra. The samurai in Edo named this technique the "most powerful sensory ninjutsu" as the user is not limited by distance, being able to cast their technique through any medium, any distance, so long as they have contact with said medium. For example, Kazumi Yagyū uses her water nature to project the technique through water, allowing her specter to appear anywhere in which water is present.

The specter, as noted by Saburō Uchiha, cannot be seen with normal eyes, but dōjutsu, such as the Sharingan or the Byakugan can visualize them.

Drawbacks
This technique is restricted to only the nature elements the user can preform. Additionally, if the specter is disrupted, the technique will disperse prematurely. This can be done by physically disturbing the specter (should one be able to see it), or by forcing the user to lose contact with their chosen medium.