Adamantine Cube of Changing

Adamantine Cube of Changing, when attuned to, will transform into an adamantine weapon of the Attuned one's choice once per long rest. While the individual who last attuned to the item sleeps the weapon made from this cube will change back into a cube of adamantine and the attunement will end. The Cube has to be attuned to after each long rest.

A mysterious cube, whose origin has been lost to time.

Notes: User must hold this cube and imagine their weapon type of choice.