บท 2140: Blood Rule Stream's Purpose

Date- 18 April 2321

Time- 22:56

Location- Card World, Southern Region, Blossom District, Sky Blossom City, Celestial Mystic Dimension

From the environment of the Card World, it was clear that the four rules water, fire, wind, and land were the most dominant rules in it. These four rules have molded the foundation of the current card world. Making their influence on the Card world's ecosystem most dominant. Without them, the current Card world would not be possible, therefore they were also called the four basic rules of the Card world. This may also be why it was more like for the card apprentices to have an affinity for these four rules.