This lesson is part of the main storyline and happens fairly early in the game. It will teach you how to use the spell on a series of objects. Once you've successfully cast Depulso on all the targets in the lesson, you'll unlock the spell for use in the game.
Here's a quick breakdown:
1. Progress through the story: The Charms class becomes available as you advance through the first few chapters of the game.
2. Attend the "Spells" lesson: You'll find this lesson in the Charms classroom.
3. Complete the lesson: Follow the instructions and cast Depulso on the objects that appear.
4. Unlock Depulso: You'll receive a message confirming that you've unlocked the spell.
Note: You may have to revisit the Charms class if you miss the "Spells" lesson the first time around.