Inochi

Background
The katana of the elements is a weapon wielded by Naran Uchiha. At first glance it looks like a normal katana, but it can be used to wield any of the elements or kekkei genkai that the user knows. It also has living chakra embedded in the katana so when it hits or connects with an opponent, it steals both their chakra and elements/kekkei genkai they have. There are only two of these katana's in the world and both are in the possession of Naran. Together they are called the Twin Katanas of Destina.