This is a very solid adventure that forms a good coda to a ToA campaign and continues the Artus/Dragonbait narrative arc. Parts 1 and 2 are very thematic, and I liked that in Part 1 there are multiple ways to resolve an encounter. Part 2 is a temple encounter where the choices of the PCs make a significant difference to the difficulty and narrative of the last two fights in the part 2.

Part 3 is a bit less detailed than parts 1 & 2, and is almost an entirely separate plot thread. So in my run I actually did Part 3 first and then Parts 2 & 3. As narratively the encounter with a corrupted immortal fragment of Ubtao seemed more climatic than an encounter with the result of a magical experiment by a mortal gone wrong. It also should give the PCs more time with a certain thematic magic item in Part 3.

I'm very much looking to running Maze of Shadows after this.