There are a variety of reasons why humans decide to close their hearts and conceal their feelings. Should you wish to learn more about such people, this spell may be your only recourse. Mercifully, Open Mind does not wrench open people's hearts. Instead, it brings you closer to them, attunes you to their feelings, and lets you listen to their inner dialogue. Naturally, this can leave you rather in their thrall, so take care not to become entranced by the innermost thoughts of the wrong kind of person.
Open Mind is a spell that allows the caster to peek inside a person's mind and listen to the voices within. Oliver obtains this spell in the Fairyground from the Fairy Godmother. It is, however, unusable.