The Three-Part Quest for the River King

There's an entity called the river king who is trapped by lag fell in this chamber protected by these rates of lag fell. When lag fell switched over from worshipping Karen to worshipping Vardizane betrayed the river king and encased him in a sarcophagus. The characters that they can defeat the rates they can open up the thing and release the river king but then it was also like well in order to release the river King you need a key and who holds the key? It was  the blood hags so then they had to go meet brute were and they did that last session that was actually pretty fun they met brute were brute were of course wanted loves to have the