Possible spawn locations
in Talus Chute
Brrrr Windburn is an Elementalist Nightmare that appears in Talus Chute, accompanied by a small group of Azure Shadows. He is probably the easiest boss to capture the elite skill Mist Form from, as one of his spawn points is very close to the transition to Camp Rankor, with almost no intervening enemies.
He shares a spawning point with three other bosses.