Selene and Moiraine
I’ve read the books multiple times so I had pictures of all the characters in my head, and while the show doesn’t always match them I absolutely love almost every single casting decision.
The intensity of that short scene between Lanfear and Moiraine in S3E1 gave me chills. Two powerful channelers (and actresses) with a nuanced exchange, saying 10x more with their body language than their words. Just brilliant. Really hope we get to see more of these two together.