Henadic Theologian
Legend
Dragon heist is a terrible module and a great toolkit.
As far as I'm concerned it's really just support, starting adventure, and between delves base for Waterdeep: Mad Mage of Undermountain. I still don't know why they haven't done a Tyranny of Dragons style book for Waterdeep: Dragon Heist and Waterdeep: Dungeon of the Mad Mage.