Latantha, or "Sword Tree", is rare and sacred to the Adem. One of such trees lies in Haert, and is the basis of the school of martial arts named after it. The tree is described as being similar to an oak, but with with sharp flesh-cutting leaves that spin in circles amidst the strong Ademre winds.
When a student of Latantha is ready, items are placed beneath the tree and the student is charged with the task of dodging the razor-sharp leaves to acquire an item and bring it back. The item the student chooses, as well as how the student retrieves it and presents it, is taken into consideration by the elders. Many students fail this trial the first time.