"Meteora's Lesson" is the second segment of the sixty-sixth episode of Star vs. the Forces of Evil. It premiered on April 7, 2019 alongside "Cornball!", and is the second segment of the tenth episode in the fourth season.
Eclipsa asks Janna to babysit Meteora while she is away. However, behind Janna's back, Glossaryck takes Meteora back through time with help from former Magic High Commission member Reynaldo the Bald Pate. Unfortunately, they go back too far and end up meeting the first Mewmen settlers of Mewni, who Glossaryck gifts the Royal Magic Wand to help them defend themselves. They then arrive at their actual destination, where they meet a younger Toffee building up his monster army. Toffee threatens to harm Glossaryck, causing Meteora to "dip down" and use her magic to fend him off. Having completed her lesson, Meteora and Glossaryck travel back to the present, with neither Janna nor Eclipsa having noticed they were ever gone.
- June 14, 2019 (Southeast Asia)