The blood of Zoltun Kulle is the key to opening the Shadow Realm where his body is hidden away. Find his blood that he may be resurrected.
▪ Western Flow Control lever pulled
▪ Eastern Flow Control lever pulled
▪ Open the entrance to the Waterlogged Passage
▪ Find the Crucible in the Hidden Aqueducts
▪ Talk to Covetous Shen
▪ Kill Gavin the Thief
▪ Pick up the Crucible