The Seer's Crystal

Now that we know there's no truth to the Black Knight's stories, we must find a way to connect him to the murdered knights.$B$BI know a way to reveal the truth about how they died, but it requires a rare material. We must gain a seer's crystal, found only among the unbound seers who congregate near night elf ruins in the Forlorn Woods in the central part of Crystalsong Forest. Find one of these seers, $N, and bring me the crystal it holds.