Lantern, Darklight
Source Advanced Race Guide
This lantern does not burn oil, but instead burns shadowcloy. When shadowcloy is used as its fuel, this lantern creates a strange, hazy darkness that decreases the light level for 30 feet around it by one step. Unlike when shadowcloy is thrown at a single target, this haze does not decrease natural darkness to supernatural darkness. One flask of shadowcloy fuels a darklight lantern for 1 minute.