Book of Shielding

This cover of this book is battered and worn, yet it emanates with abjuration magic.

The book has 25 Charges.

The wielder of the book can cast shield for 5 charges.

If thrown at any creature within 10 feet it will reduce incoming damage by an equal amount of charges. The wielder decides the amount.

The book regains 1d8+5 charges at dawn.