Your patron has granted you otherworldly musical talent. As an action on your turn, you can create a pact instrument in your empty hand. Each time you summon it, It takes the form of an instrument of your choice, and it can be used as a spellcasting focus by you. You are considered proficient with your pact instrument, and you add double your proficiency bonus to any ability check you make that uses the instrument.
Your pact instrument disappears if it is more than 5 feet away from you for 1 minute, if you use this feature again, if you dismiss the instrument (no action required), or if you die.
You can transform a magic instrument into your pact instrument if you perform a special ritual over the course of a short or long rest. Once complete, you can shunt it to an extradimensional space, or summon it back, as an action. This ability does not affect artifacts or sentient instruments, and you can only have one pact instrument at a time.
Shadows of Dakaron 