Holy Oil

This oil is blessed by a powerful divine magic user, and is often used in the most sacred of rituals, though it does have its use in adventuring. A flask of holy oil has the same properties both a flask of holy water and regular oil. When ignited, however, holy oil burns with a golden, radiant flame. Whenever the holy oil would cause fire damage, the target takes additional radiant damage equal the fire damage. For example, a creature doused in holy oil that has been ignited would take 5 fire damage and 5 radiant damage.

A fiend or undead must succeed on a DC 15 Charisma saving if it attempts to move through or over an area of burning holy oil, failing to do so on a failed save.

The radiant flame of burning holy oil sheds sunlight. Thus, the bright light created by a lamp or lantern fueled by holy oil is considered sunlight.

Finally, a flask of holy oil can be applied to coat one slashing or piercing weapon or up to 10 pieces of ammunition. Applying the holy oil takes an action. The coated weapon counts as a magical weapon on attacks against fiends and undead, and a fiend or undead hit with such a weapon takes an additional 1d4 radiant damage. Once applied, the holy oil retains potency for 1 hour.

A cleric or paladin may create holy oil by performing a special ritual. The ritual takes 1 hour to perform, uses 100 gp worth of powdered silver and pure oil, and requires the caster to expend a 5th-level spell slot.