Eldryth

For anyone wondering about the quest text, I saw it in another video. It's mostly unimportant, but there is one line at the end with pretty strong implications about Garrosh's character at this point: one of the quest givers mentions that this is how Garrosh rewards failure. Garrosh isn't having you kill the dark shamans because of their experiments, he's having you kill them because THEY FAILED AT IT. Which means he's probably already started his corruption, but he's been surprisingly good at keeping it a secret.

This seems to be pointing towards a revival of the previously canceled Baldur's Gate 3: The Black Hound more than anything else. A remake is unlikely, given the poem/prophecy has nothing to do with the old games except a brief mention of the PC's heritage, and the "Silver moon" line clearly hints at wolves or hounds being important.