This wasn't terrible and reminds me a bit of Revelation of the Daleks, in that both seem to stand out a bit better as content compared to the rest of the season.  I found this story a lot harder to get through than Revelation, though.  In comparison, this one spends a lot of time with really lousy dialogue that feels totally forced and unnatural, while, even though this story isn't really that long, it feels like it drags on a bit.  The whole historical background of this story was interesting but most of the scenes that come out of it wound up being pretty boring.  I've really come to dislike Anthony Ainley's acting for the Master, too.  He's just not fun like Roger Delgado or even the Decaying Masters were.

I'm giving it a decent bit of a pass though, because at the end of the day, it has a goofy comic book feel to it I could quite appreciate.  The Rani and the Master teaming up is simple, but a lot of fun, and I did enjoy how they introduce her character here.  We basically don't have any other female recurring villains like this and won't again until Missy, I guess, so it is nice to see her here and this might just be the only halfway good television Rani story, so that's something.