Arcane Scholar

You are fascinated by multiple schools of Magic and delve deep into their study. You gain the following benefits.

• If you are a Wizard, you gain expertise in your school of Magic. Your proficiency bonus is doubled for your spell attack modifier and spell save dc when using spells from this school.
• Regardless of class, you gain expertise in one (additional) school of Magic of your choice. Your proficiency bonus is doubled for your spell attack modifier and spell save dc when using spells from this school. Divination Wizards may choose a third school of Magic and take expertise in this school as well. Proficiency bonus is doubled for your spell attack modifier and spell save dc when using spells from this third school.
• You may take this feat multiple times, choosing a new school of magic each time.