so the fears can’t be destroyed and they can’t be banished back to where they came from so…hmm
hmmm if only… there were a supernatural structure that specialized in collecting fears and was built originally as (or on? whatever) a prison and already had a warden seated in the middle of it. a warden that has made it perfectly clear throughout the series that killing him would be ill-advised and deserves a fate worse than death anyway! hmmm if only!!