This story was a masterpiece. I can find no faults with this story, the Master manipulating Cole to create a paradox to play into the next story is genius, and the War Master is one that I have no issue visualising sitting down in the TARDIS gardens with a glass of wine. I also enjoy how there's a large gap during this story, where the War Master can duck off and do whatever. The rise of a new kind of Cybermen was such a gut-drop moment, especially the moment when Cole activates Elidh's emotional inhibitor. This story feels relevant now more than ever, with the recent political events.