Harbinger — discipline of the blade —

The elusive and mysterious harbingers pour out from the realms of faerie to raid mortal lands, speeding ahead of the main host to prepare the way to victory. Harbingers use the hidden passageways that crisscross the world to strike from the least expected directions and then melt away before their foes can mount a defense. Any faerie might pursue this path, though pixies are best suited to it.