The book of blank pages

The book of blank pages is a book that keeps Adderhead immortal. In fact, this book can keep anyone immortal as soon as his name is written in it. But if the words "Heart, Spell, Death" are written in the book, the immortal person would lose his immortality and die immediatly. This book was created by Mortimer Folchart in the Adderhead's casttle to keep Adderhead alive. But to test first the power of this item, Adderhead write the Foxtail'name first, injured him, and to confirm the immortality, and them write the three words to kill him.