Andraste

I mean, if the Master is just now getting around to building Cyber-Lords how did he wipe out Gallifrey in the first place? And why didn't the dead Time Lords regenerate then, since they can do it now?

Maybe because he stuck them all in the freezer (that seems to at least slow down the process if the TV movie is anything to judge by) but that just raises the question of how he killed everyone on the planet and got them all into cold storage. Given what's said during Day of the Doctor about how many children were on Gallifrey during the Time War, it seems like the population of the planet is well in the billions. And if the Master is really capable of killing them all at once - something the Daleks never pulled off! - how is he not gloating about the plan he used???

And the Doctor not having to push the button was super weak, though I did enjoy the Master being very into it!

Honestly, the Master being very into doomsday devices was far and away the best thing about this episode.

There's so much just left unplotted, even if I really like Martin!Doctor and having more than one timestream of Doctors and Masters.

Is so frustrating - I want to like it! But I cannot, because too much of it stupid and/or not explained properly.