@Skoll_Shorties is the lichking a old gods pawn I feel like they lied I heard that we are going to deal with the lichking the expac after legion and the expac after legion y didn't that make into BFA or is coming in a l8ter patch?!
I don't believe they ever said we'd be dealing with the LK after Legion it was implied we might have to someday though. As for the LK being an Old God pawn it's possible that he could be a pawn of Yogg-saron with how much saronite surrounds him.
