silver oil

It is possible to cobble together a functional oil that will allow a weapon to act as though it is silvered for the purposes of overcoming resistance/immunity.

Required Ingredients

• 1 ounce of oil
• 5 sp powdered silver
• A handful of base earthen clay

One batch makes 5 applications.

Time to process

Up to 5 batches can be made at once (assuming all ingredients are available) but it takes 1 hour to properly mix. 5 applications can be stored in a flask or vial with a stopper.

How to use

This oil can be applied to a weapon over the course of 1 minute (most of this is allowing it to set/dry enough not to immediately come off when used). A weapon coated in silver oil will remain coated indefinitely as long as it is covered or sheathed while not in use.
When the weapon lands a hit, roll a d20 - if the result is equal to or less than the size of the weapon's damage die, the coating wears off.