There's a lot here. I love the color theming, with the death moves picked out in carmine. The one-sentence characterizations are very well crafted -- I can tell so much about the NPCs just from these small descriptions.
The descriptions of the tech are among the best I've seen in this kind of sci-fi crossover thing. I especially like the "mirrors." But then also the fact that the nobles alone can operate the magic devices of the tower tells more backstory than telling it would do.
The design of the tower firmly places this into a certain kind of pulp territory. Great choice there.
Really good stuff here. It's somehow gonzo without being gonzo.