What is tanis root?

Tanis root is a fictional herb that appears in the horror novels of the American author H.P. Lovecraft and his followers. The root is said to have mystical properties and possibly sinister associations. In Lovecraft's work, it is often used in occult rituals and its power is linked to ancient and forbidden knowledge. The idea of Tanis root has since become a common trope in horror and science fiction, appearing in various media such as films, video games, and comic books. However, it should be noted that Tanis root is not a real plant and is entirely a creation of fiction.