Not all plants on Yanth are used solely for beneficial medical purposes. The dusk leaf is little more than a dark purple weed, but is part of a sector-wide smuggling trade. When dried and ground, the resulting substance can be smoked or injected in a careful ritual, giving an unearthly, sensory-expanding experience that is a part of several cult rituals. It is Addictive, and each dose grants the Unnatural Senses (20) trait for 1d5 hours. It can also be taken without the normal application test for Yanthian drugs, but can induce Unknown in doing so.