Coatings are Consumables that can apply a variety of effects to equipped weapons that aid in combat for a short period of time. Some coatings apply poisons to deal extra damage, while others improve hit chance, apply Conditions, or impose Disadvantage on the target.
Coatings can be looted, bought from vendors, or crafted with the Alchemy system.
Using Coatings
Coatings can be applied using a 
Bonus action to grant an effect to a single equipped weapon set.
Most coatings remain active on the weapon for 10 turns. Only one coating may be applied to a weapon set at a time.
When dual wielding, coatings are applied to both main hand and off-hand weapons at the same time. Coatings are not applied to both melee and ranged weapons in the same bonus action; each must be applied separately.
Some coatings can also be thrown using the 
Throw 
Action to inflict the same effect on multiple creatures, though this reduces the effectiveness of having a coating applied to a weapon for the full 10 turn duration.
