This story is a sequel to Twilight Goes to Dalaran
Priest, the undead Forsaken, helped Twilight to get back home to Equestria - but now he is stuck in Ponyland! He has no idea how to handle this peaceful world full of cheery colors and friendship. On top of that, unsettling things start happening to him and rumors come up that there's a ghost haunting Ponyville...
2nd installment of the Twilight Goes to Dalaran series.
Knowledge of World of Warcraft is not necessary to understand the story.
Warning: Spoilers in the comments!