I haven't commented on the episode itself yet, so here's my review:
"Magic to Make the Sanest Man Go Mad" was, for me, the best episode of DSC so far, and a great example of how to do a "bottle show".
I have mentioned this before, but prior to his appearance in "Choose Your Pain", I was only tangentially familiar with Harry Mudd, and yet I've absolutely loved his two appearances in DSC thus far. Rainn Wilson feels like the perfect antagonist for DSC's crew, especially Lorca, and the setup of his plan was the perfect framework for some great character interaction and development, particularly for Stamets, Burnham, Tyler, and Tilly.
It was fun getting to see Burnham loosen up a little bit, by necessity, and connect with Tyler, especially since Sonequa and Shazad have electric chemistry. It's sad that the two characters don't seem to remember their first makeout session, but hopefully we'll get to see them get a 'proper' one that they do in fact remember at some point before season's end.
Anthony Rapp's Paul Stamets has become my new favorite "everyman" Star Trek character, and I love that his interactions with the mycelium network have had such a 'loosening' effect on his personality, since it made for some fun interplay this episode between him, Burnham, and Tyler. I especially got a kick out of the scene where he danced with Burnham and told her about the first time he met Culber.
I thought it was great that the crew were able to outcon and outsmart Mudd the way that they were, and it'll be interesting to see if we see him and/or Stella and her father again before the first time he encounters the Enterprise a decade later.
I've seen people online comparing MtMtSMGM to TNG's "Cause and Effect", but the episode that it personally reminded me the most of is Voyager's "Before and After", at least structurally, which is nice since BaA just happens to be one of my favorite episodes of Voyager.