This series started pretty well.
It was very fun and charming, and for its first seasons it had interesting villains.
Sadly, after the "Battle for Mewni" episodes the series start losing steam, leading to an incredibly unsatisfying conclusion which honestly makes look the main characters pretty bad, not to mention how the completely underwhelming final antagonist is defeated in a rather anti-climatic manner.
My personal advice would be to watch this series until the Battle for Mewni and ignore everything else what happens after those episodes.
Star vs. the Forces of Evil
(2012–2019)
Started strong, but then...
7 October 2020
Warning: Spoilers