Magnet Release (磁遁, Jiton; Viz "Magnet Style") is an advanced chakra naturekekkei genkai which allows the user to convert chakra into magnetic forces and magnetise an object. It is unknown where it originates from but both Sunagakure and Kumogakure possessed users of this kekkei genkai in the past. It is unknown what elements this nature entails.
Toroi from Kumogakure would magnetise special shuriken. When the thrown shuriken comes into contact with any other object, it causes the struck target to become magnetised. One hit to the body will cause a magnetic field within the said body, making it an easy target for any further magnetised weapons to be drawn to it. However, each time the magnetism is transferred, it weakens.
The Fourth Kazekage could manipulate Gold Dust with his magnetic chakra, which is specifically used to counter Shukaku's sand by taking advantage of gold's heavier weight to mix in with the sand and hamper its control. When the Fourth Kazekage uses this nature, he gains black rings around his eyes, similar to the ones around Gaara's eyes.
Like Lava Release and Dust Release, Magnet Release has more than one user with no apparent blood-relation to each other.
The anime character Jiga also possessed a seemingly similar ability of magnetism. This was from ingesting iron when he was younger which essentially made him a human magnet.
This is so far the only nature transformation that does not use the element for direct offence. Instead, all the users so far use it to manipulate weapons to attack as the chakra is converted into magnetic forces, rather than metal itself.