Magnet Release, or Jiton, is an nature combination Kekkei Genkai, formed by combining Earth Release with Wind Release. Several Characters have been able to use this technique.
Here are all 7 characters who can use Magnet Release.
Toroi was a Jōnin from Kumogakure. He was a famed Shinobi. Toroi possessed the Magnet Release Kekkei Genkai. He usually used them in conjunction with his shuriken, which then created a large magnetic field and attracted all magnetized objects. Due to his skills, Toroi was also reincarnated by Kabuto Yakushi in the 4th Great Ninja War.
Shinki is the adoptive son of the Fifth Kazekage, Gaara. He possesses the Kekkei Genkai of Magnet Release. Furthermore, he can control the Iron Sand, just like the 3rd Kazekage. We’ll definitely get to see more of him in the ongoing Boruto manga.