Don't have to camp on the island, just look at your map whenver you think of.
Once a large green skull (referring to rare elite creatures) indicating "Somber Dawn" shows up, you have at most half an hour to find and tame it.
Even better, the skull moves on your map to help tracking this cute thing.
Even better, during this period, respawn time would be about 1 min.
Rare Elite
Somber Dawn
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
Appears to be tamable as of 8.1
Damn you Blizzard! Damn you! How could you make him or any other horse/unicorn a target. Somber Dawn is absolutely beautiful. DAMN YOU! :'(
Details
This roster comes from the current game client's data files, so it is not a complete list of every NPC in the game - older world NPCs that are no longer in the modern client are absent.
Hunter Pet: Courser
Somber Dawn belongs to the Courser creature family, which Hunters can tame; its pet specialization is Ferocity. The Courser diet in the client data: Fungus and Fruit. The Courser family’s own pet skill line (Pet - Courser) teaches 2 abilities:
More Courser
Other creatures in the Courser family. See the whole family.
Community notes from Wowhead · 84 comments
Top 3 shown aboveThe comments below were written by Wowhead users. They are community notes, not TheWoWDB comments. See them in context on Wowhead.
The top 3 are shown in Top Comments above. Read all 84 on Wowhead.
Level and Map Tracking
The game data tunes Somber Dawn for level 45, Legion content.
The map marks it with vignette 1,955, which the client hides once hidden tracking quest 47028 is complete. In game, /run print(C_QuestLog.IsQuestFlaggedCompleted(47028)) prints true when that quest is flagged for your character.