Ephemera is the stuff of Shadow, the matter of which spirits, ghosts, angels and similar creatures are composed. It is also the substance of Twilight. To material beings, ephemera is insubstantial and invisible; ephemeral creatures may only affect the material world through the use of numina.
References[]
- CofD: Chronicles of Darkness: Revised Storytelling System Rulebook, p. 122, 124-125
