Attunement

Some magic items require a creature to bond with them before their magical properties can be used. This bond is called attunement. Without becoming attuned to an item that requires attunement, a creature gains only its nonmagical benefits.

Establishing Attunement: A creature can attune to a magic item by touching the item and using an action to seal the bond. Once attunement has been established, the creature gains an intuitive understanding of the item's magical properties and how to use them.

Attunement Limitations: An item can be attuned to only one creature at a time, and a creature can be attuned to no more than three items at a time. Any attunement attempt that would contravene one or both of these limitations fails.

Ending Attunement: A creature's attunement to a magic item ends if the creature and the item are separated by more than 1 mile, if they are separated by time travel, or if the creature dies. A creature can also voluntarily end its attunement by touching the item and using an action to break the bond (unless the item is cursed).

Once a creature's attunement to a magic item ends, no other creature can attune to that item for 24 hours.

Attunement encourages players to divvy up magic items, and prevents them from exploiting rule contrivances to dominate encounters.