Oil of Extreme Bludgeoning 2014

This viscous indigo-hued oil smells of iron. The oil can coat one bludgeoning weapon or up to 5 pieces of bludgeoning ammunition. Applying the oil takes 1 minute. For 1 hour, the coated item is magical, has a +1 bonus to attack and damage rolls, and deals an extra 1d4 force damage on a hit.