after the fairy tale part 2 quest, u can use the fairy rings. the cobination "bkq" teles u to some centaur place, and there are ancient pine trees. using an axe, when u try to cut any tree there, a tree spirit jumps u. it is the same random event, but it comes everytime! ive gotten 3 of the spirits to gangbeat me at once! this is a good spot to kill the tree spirits and gather ur nature runes. just a quick note u can never cut any tree down