The Unique Unicorn side quest in Hogwarts Legacy becomes available during the Prepare for Your O.W.L.S main objective. Travel to Hogsmeade and speak with Betty Bugbrooke near Hogsmeade Square. She’ll ask you to check on her friend Hazel, the unicorn. Exit Hogsmeade and travel to Upper Hogsfield. From there, go west into the Dark Forest to find the Unicorn Den. When you reach the search area, you can easily locate Hazel by looking for the white dot on your mini map. Once you find her, capture her using your bag. Use Levioso to make catching her easier. Once you’ve caught her, return to Betty and let her know Hazel is safe to complete the quest. You’ll receive Wooden Maiden configuration as a reward.