Oil of Destruction

When applied to a weapon, attacks made with that specific weapon are able to affect critical hits on creatures that are normally immune to critical hits (e.g., Constructs, Oozes, Plants, Undead, etc.) If the wielder of the coated weapon is a rogue, attacks made with that specific weapon can be used to perform a sneak attack on creatures that are normally immune to being sneak attacked.

Oil takes one round to apply to a weapon. Once applied, the effect lasts for the entire combat.

A polymorphed character can only benefit from a weapon oil if the oil was applied to their weapon prior to transformation. Monks cannot apply a weapon oil to their bare hands, but can apply a weapon oil to a physical weapon they wield.

A single weapon may be coated with more than one oil at a time, but unless otherwise specified, each oil takes one round to apply. Multiple coatings of the same oil do not increase that oil’s effectiveness.