Season 3 introduces 7 new Legendary Aspects and rotates several drop-only Aspects into the Codex of Power by adding them as a reward through the Season Journey. Here’s a list of all the Aspects that can be earned by completing each Season Journey chapter.
All New Legendary Aspects in Season 3 Diablo 4 Leveling Builds Tier List
General (All Classes)
Slayer Chapter (Chapter 5):