As-You-Will Quarterstaff

A metal quarterstaff which can perform magical actions at the will of its owner. At the command of the owner, the staff can magically:

• Return. The quarterstaff returns to the user at a speed of 10 feet per second.
• Lengthen. The staff lengthens up to 20 feet. If there isn't enough room for the staff, it attains the maximum possible size in the space available.
• Encumber. The staff immediately becomes 500 pounds heavier.
• Shrink. The staff's size is halved in all dimensions, and its weight is reduced to one-eighth of normal.
• Illuminate. the staff sheds bright light in a 30-foot radius, illuminating magical darkness. The light can be colored as you like. Completely covering the staff with something opaque blocks the light.
• Hold. Become fixed in place similar to an "Immovable Rod." Until you will it otherwise, the quarterstaff doesn't move, even if it is defying gravity. The quarterstaff can hold up to 8,000 pounds of weight. More weight causes the staff to fall. A creature can use an action to make a DC 30 Strength check, moving the fixed staff up to 10 feet on a success.

You have a +2 bonus to attack and damage rolls made with this magic weapon.
Proficiency with a quarterstaff allows you to add your proficiency bonus to the attack roll for any attack you make with it.