Cautious Caster

You've learned to channel your magic into always having the correct spells prepared. You gain the following benefits.

Ability Score Increase. Increase your Intelligence or Wisdom by 1, to a maximum of 20.

Additional Prepared Spells. You can prepare additional spells equal to your proficiency bonus.

Emergency Spell. You can cast any spell you know but don't have prepared using a spell slot one level higher than the spell's level.

Magical Frugality. If you cast a spell that targets one creature, you can immediatly regain the spell slot used on a failed attack roll or succesful save. You can use this ability once per long rest.