Armory Rod

As a bonus action, you can cause this rod to take the form of any melee weapon.  It then takes on the stats of the chosen weapon: damage dice, damage type, weight, and properties.  It stays in this form until another bonus action is used to change it again.  This counts as a +1 weapon.  While attuned to this rod, you are proficient in any weapon’s form it takes.

Notes: Must have proficiency with at least one weapon.