Gabriel's Horn of Truth is an angelic instrument belonging to the archangel Gabriel. When the horn is activated a sigil will draw any nearby angels to it. The only ingredients revealed for it were blood, griffin feathers and the bones of a fairy.
Background
Season 6
Dean and Castiel initially believed that Gabriel's Horn was responsible for people suddenly being compelled to tell the truth. However, it turned out the goddess Veritas was actually responsible.
Season 9
When Castiel is lead to an abandoned building in an industrial area, he finds it filled with the corpses of angels, and a pulsating sigil on a wall, which soon dies out. After Gabriel reveals himself to be alive to Castiel, he tells him the angel siren that he was hearing was in fact the Horn of Gabriel, and that it's purpose is to unite angels by calling them to it. However Gadreel was using it to trap and kill angels, working his way up north through Utah, collecting the ingredients from the shops of hunters. Castiel eventually uses the Horn to rally a small group of angels to follow him.
Appearances
- Season 6
- You Can't Handle The Truth (Mentioned only)
- Season 9
- Meta Fiction (Mentioned only)
Trivia
- In lore, this horn was owned by Gabriel, and able to ressurrect the dead.