The Court of the Stars is located in Suramar the ancient Night Elf home. They have been left nearly untouched by the Legion thanks to the strong magic barrier surrounding the place. Although that is the appearance that it gives even with the armies of the Legion marching all over Suramar, the Nightborne have been corrupted from within. They have been infiltrated by an agent of the Legion that has made the strongest person in the empire fall to their knees. Adviser Melandrius seems to be taking care of the place now and will be the end boss of the dungeon.
The Darkheart Thicket inside of Shaladrasill will lead up to the first raid of Legion, the Emerald Nightmare. Xavius has come to corrupt the world with the nightmare and he has been lurking in the shadows for years waiting for his time to strike. All the arch druids have noticed that there was something wrong within the dream and have taken up arms to fight the encroaching nightmare. Xavius has succeeded into corrupting the dragon aspect Ysera and now seeks to take over the world using the power of the nightmare and giving it to the Legion and Azshara.
Blackrook Hold is the ancient home of the great night elf general Lord Ravencrest of the the Ravencrest lineage. He has been risen back to life by the magic of the warlock Gul’dan and is now just a spirit trapped in time but in the present. All the soldiers of the Ravencrest army have been brought back to life and they are unable to see any living person for what they are. Instead they see them as demons thinking they are still stuck in the war of the ancients. Getting a WoW Mythic Dungeon Carry for this mythic dungeon would be a great choice.
The Arcway is one of the most complex labyrinth systems ever built into Azeroth. It is located beneath Suramar and has the key to unlock the Nightwell. The citizens of Suramar go by their days without knowing the danger that lurks beneath them. The power that is locked below the Arcway is one that hold the whole empire together. The Grand Magistrix appoints her most loyal subject to keep it running well and to check the power of the well constantly. The Arcway’s last boss is Advisor Vandros and the most powerful of all the advisers.