The Magicians (2016): It often gets pitched as "Hogwarts for adults" because it features a magic college/university, but honestly that is just the initial backdrop and a massive undersell.

It is the rare show where the creators were seemingly handed a blank cheque to be as creative as they want to be, and they make full use of that in more ways than I can list here (but which definitely includes both the magic system itself, and the hilarious nonchalance towards the consequences of magic being a reality); yet all the while, they stay true and fiercely loyal to their characters, who are all deeply flawed, but which you can't help but want to see succeed; plus they managed to write genuinely great humor.

The best summary of the show comes from one of the characters themselves: "Magic doesn't come from talent. It comes from pain."

Be warned: the first few episodes, and possibly the first season, are the weakest and roughest of the bunch, which probably really hampered viewership. They do still manage to find their own tone, but it's nothing compared to seasons 3-5.