Connection

The caster remains in physical contact with a common or uncommon magic item through the entire casting of the spell. After one hour, a mystical connection is established between caster and object, which from then on will only work correctly when it is being used by the caster. If another creature uses the item, none of its magical properties will work: weapons won't deal magical damage or add a bonus to rolls, no charges of the item can be expended to produce effects, Bags of Holding won't store more objects than the physically possible, and so on.

If the item requires attunement, the caster must be attuned to the object before using the spell. Additionally, the attunement can't be broken if the caster doesn't want it to - even if he or she dies! - unless the Connection spell is destroyed by effects such as of Dispel Magic.

An object can only be the target of one Connection at a time. Another person that holds the object won't know it is Connected to someone else unless he or she casts Identify or uses another method to detect magical effects.

If a spell slot of level 3 or higher is used to cast the spell, it can also target rare magic items, and if one of level 4 or higher is used, legendary items are valid targets as well. However, if the item is sentient and it doesn't consent with being the target of the spell, it can make a Wisdom saving throw as the spell is cast, and another one every day after that if it fails. As soon as it succeeds, the spell ends and the caster can't target that object with Connection again for one year.