Blizzard announced that the completion of Season 7: Season of Witchcraft Seasonal Journey rewards the first avian pet in Diablo 4, Dorian the Raven! The Seasonal Journey also features all of the classic rewards, including a Resplendent Spark and many reward caches to help players gear their first characters.
Diablo 4 Season 7 Battle Pass Diablo 4 Season 7 Blog Post
The Season Journey is broken into Chapters with tasks to complete.
