My second favourite of the whole set, this feels like the perfect fairy tale.

While again I don't think The Doctor would be in fairy tales they tell Gallifreyan children... eh, I can forgive it, the story is great. A person who can give you whatever you want, but there being a twist that you don't truely get what you desire, is a great fairy tale trope, and the idea here that it's all done in service of collecting the grief and tears of those he deals with is just such great imagery.

Speaking of great imagery, that last moment where the main character frees all the loved ones, smashing the jars and creating a tidal wave of tears (iirc) is also just so good.