The Wizards of Once series by Cressida Cowell
- The Wizards of Once
- Twice Magic
- Knock Three Times
- Never and Forever
The Yang Family series by Lensey Namioka
- Yang the Youngest and His Terrible Ear
- Yang the Third and Her Impossible Family
- Yang the Second and Her Secret Admirers
- Yang the Eldest and His Odd Jobs
The Magic Misfits series by Neil Patrick Harris
- The Magic Misfits
- The Second Story
- The Minor Third
- The Fourth Suit
Can you think of a series where the titles count up or down?
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