The series of Blood Demon Spells that Xia Zhou mastered made Kresito realize:
[Xia Zhou's status in the Western Continent is equivalent to Boguste's in the Eastern Continent.]
That's why Kresito brought out this booklet.
After reading about Boguste's experiences, Xia Zhou reckoned that he shouldn't end up being torn apart and devoured.
After all, the times were different.
In the Second Age, humans had nothing to rely on except the power of the bloodline, forced to walk the path of bloodline power even unto darkness.
Currently, if a Pureblood Mage does not have a Blood Element Servant, then they could use an Elemental Minion as a substitute. If there is no weapon or armor condensed by the Blood Spell Offense and Defense, then use a Binding Energy Field.
No one but the Demon Church would stick to Blood Demon Spells anymore.
Xia Zhou flipped through the booklet, and in the following content, there was a simple table.