Izanami is a jutsu born in the eyes of a Sharingan user and strengthened when that user gains Mangekyo Sharingan. It is a rare teleportation jutsu, in that it can teleport the user anywhere within their sight. If the user has only unlocked their normal Sharingan, the technique instantly drains half of their chakra upon use, meaning it only has two uses. If the user has unlocked their Mangekyo Sharingan and awakened Amaterasu and Tsukuyomi, Izanami is less strenuous and can be used without rapid chakra consumption. The Mangekyo version can also switch two objects teleport the user and an object of their choice anywhere with in the user's sight, as long as the target they are teleporting with them is also within the user's sight. Riyan notes that it doesn't awaken in those with transplanted Sharingan.
Sasuke Uchiha use a different version of this technique. This version is only obtainable by gaining Mangekyo Sharingan. It's effect is similar to Izanagi, but rather focuses on the minipulation of Ninjutsu rather then Genjutsu. It allows the user to control the flow of Ninjutsu they use and can increase or decrease its effectiveness. This technique can even affect another individual's Ninjutsu if one is skilled enough to use it in such a manner. This technique is also supposedly used by Sasuke to control the black flames of Amaterasu, and has shown to even put them out completely. The amount of chakra this technique uses is dependant on what Ninjutsu the user wishs to affect, a Ninjutsu can be negated completely if they pay a slightly larger amount of chakra used to create the technique, and in turn can increase it's effectiveness by that much, making C and B Rank Ninjutsu match the power of an A or S Rank.:scorps: