Rare Wondrous Item (Musical Instrument – Lute), Requires Proficiency with Lute, Requires Attunement 

Strings of Fate. You can use your action to create a song that will slightly influence the weavings of destiny. Choose a creature that can hear you within 60 ft. of you and choose an ability and whether you wish to influence an ability check or saving throw. Then you roll a d20, and the next time the creature makes a saving throw/ability check with the chosen ability within the next minute, it is replaced by the rolled number. 

• Instead of choosing a general check or saving throw, you can also choose an ability check made to do a specific activity, or a saving throw against a certain effect or condition (For example you can designate, that the roll will only affect the creature’s next saving throw against the Hold Person spell or against being blinded, or against a different effect).
• The chosen creature is aware of the d20 roll and how it will affect them, and can act accordingly to prevent it or use it to their benefit.
• Instead of selecting an ability, you can also choose to influence an attack roll, the feature then works identically. You can also specify the details of the attack roll (weapon used, ranged or melee, spell attack or weapon attack).

A creature can only be affected by this ability once per 24 hours.