Black Sage has a similar scent to white sage, but it is deeper and almost slightly smoky.  
 
Black Sage also known as Mugwort, Witch's Herb or Dream Weed is a powerful herb used by shamans and healers to encourage dreams and visions, it is said to protect the user whilst they are in the process of shamanic journeying or astral travel. It is known for its abilities to provide restful sleep and sweet dreams, although is believed to bring out the truth of situations so if used before bed can bring out vision like dreams filled with symbolic meaning. It is also a strong clearing agent that easily removes negative energies.