Dragon Wing Bow

You gain +1 to your attack rolls while using this
bow. The weapon is infused with the essence of
a black dragons breath. When you hit with an
attack roll using this magic bow, the target takes
an extra 1d6 acid damage. If you load no
ammunition in the weapon, it produces its own,
automatically creating one piece of magic
ammunition when you pull back the string. The
ammunition created by the bow vanishes the
instant after it hits or misses a target.