Who tells the book, and the chapters in their voice.
Sprite of the Grey Woods
She sees everything at once, inside and out, and cannot stop. A lake of mana and no cup. She sleeps in a teacup on the shelf and learns, at last, to pour one drop.
The Wise, of Berrycannon
One mana. A hundred and twelve years. All six schools, one cup at a time. She has not taken a student in thirty years, and she is tired of watching them go.