"I remember that the Scroll Dragon is the powerful giant dragon second only to the Three Great Legendary Dragon Species in the DND world view, and it is best at researching anything related to magic."
After briefly recalling the information about the Scroll Dragon, Zhang Yanhang immediately understood why, after obtaining the bloodline of such a giant dragon, he would unlock something like the Spell List. The reason was that this was the Scroll Dragon's very own Talent Ability.
Following this logic, Zhang Yanhang figured that if he were to obtain the bloodline of other giant dragons, he would likely also acquire the abilities that those dragons excel at, such as obtaining flame abilities from the Red Dragon, or nuclear blast abilities from the Plutonium Dragon. Well, maybe the Plutonium Dragon is a bit unrealistic.
