Book of Seal

File:Book of Seal.png	Book of Seal
	Rank: Variable Type: Treasure
The cover of Book of Seal is fully marked by seal hex, but there is only one page inside this book, which describes the battle between a human and monsters by ink. It's said that there was a powerful priestess in the far east a long time ago. She protected human from monsters. To kill her, monsters gathered together and launched an attack suddenly. The priestess was badly wounded, and she sealed herself and all the monsters in a book by using her last power. Since then, people have been fighting for this book to obtain its strength, and the book was lost during that period. Until one day, another priestess found this book in a cave, but the power of this book was lost.
To upgrade this item, you MUST equip the book and consume any of Blood Jade, Evil Jade, Sacred Jade or Spirit Jade. Level 1 (3*): Recover 3 MP each time you enter the next floor (use 10 jades to upgrade to the next level). Level 2 (4*): Recover 6 MP each time you enter the next floor and increase the effect of all spells by 5% (use 20 jades to upgrade to the next level). Level 3 (5*): Recover 9 MP each time you enter the next floor, increase the effect of all spells by 10% and master active skill "Four Symbols Seal" (turn over all slates immediately and exile all the enemies; invalid against bosses). Costs 50 energy - gain 5 energy per jade used, up to a maximum of 99. The skill is only visible under the Special spell tab when the book is equippred
Source(s):	Carried by Priestess when selected as main