In my opinion, season 2 is when Owl House starts to REALLY get good! While season 1 was lower-stake slice-of-life fun as we get introduced to this world and cast of characters, season 2 is when the larger story and higher stakes really starts to kick in and characters begin hitting the peaks of their development. Even the 3-part finale was really good despite being shortened by Disney (was supposed to be a proper 3rd season, but due to a lot of stuff going on during production time, was reduced to an hour and 30 minute special)
Over all its a REALLY good series! Lots of fun magic and whimsy, but also a pretty serious story that isn't afraid to go into heavier topics.