This alchemical oil can coat one weapon or up to 12 pieces of ammunition. Applying the oil takes 1 minute. For 1 hour, the coated item is magical and deals 3d6 bonus necrotic damage on a hit. 

Slaying Oil. White flecks of bone can be seen suspended in this black slime. When used, the oil produces a putrid smell and seeps into the coated item, which gives off a foul-smelling black smoke for the duration. Constructs and undead are immune to the oil's bonus damage.

Notes: Damage: Necrotic, Buff, Consumable