When you fire this ammunition, it magically continues flying in a straight line for 30 feet unhindered. Any creature in this ammunition's path must make a DC 15 Dexterity saving throw, taking 4d6 bludgeoning damage on a failed save or half as much on a success.
Additionally, if a Large or larger object is in this path, such as a column, wall, or statue, the ammunition creates a hole in it that is 5 feet by 5 feet in size.