Oil of Defoliation

Sometimes known as weedkiller oil, this greasy amber fluid contains the crushed husks of dozens of locusts. One vial of the oily substance can coat one weapon or up to 5 pieces of ammunition. Applying the oil takes 1 minute. For 1 hour, the coated item deals an extra 1d6 necrotic damage to plants or plant creatures on a successful hit. The oil can also be applied directly to a willing, restrained, or immobile plant or plant creature. In this case, the substance deals 4d6 necrotic damage, which is enough to kill most ordinary plant life smaller than a large tree.