Engorgement

You cause an inanimate object you can see to grow to up to 3 times its normal length. If the object is moving, it retains its velocity. The object's weight is increased by a factor of 6, and regardless of what it was, it can no longer be used as a weapon.

For example, if cast on a longsword with a length of 38 inches and a weight of 3 lbs, it is now approximately 113 inches long, and weighs approximately 729 lbs