I really enjoy a lot about this episode. Most of the ideas – the Doctor's future self having been a mythological figure in the past; the characters of Arthurian legend in modern-day England; Ace being able to lift Excalibur; the two Brigadiers – are solid. The setting is really nice too, and Shou Yuing is a great quasi-companion.

The effects, it must be said, are terrible, making "Time and the Rani" look good by comparison. Ironically, shoddier practical effects probably would have been more convincing than these then-state-of-the-art CGI effects. But my main frustration with the story is that it just doesn't make sense. Why is Morgaine trying to ... actually, what even is Morgaine trying to do? And why does she have the Destroyer around if she doesn't trust him?

So again, I arrive at three stars not in the sense of "mediocre", but in the sense of "parts of it are a solid four stars and parts of it are just scraping two".