Nial Lacardian was not too sure how much time he spent inside the Monster Dimension, but he carefully inspected every single monster to analyze the quality and stability of their mana, and the hue of potential that shrouded them tightly.
Being able to tell how much potential a monster had, and how much of that potential had already been unleashed was a great thing. It allowed Nial to figure out which monster would be the best familiar for the short-term, and which monster he should choose to have the greatest benefits long-term.
Of course, the best familiar would be the monster that was the most compatible with his soul. Choosing a monster according to that would give him the greatest benefits over a long period as long as the monster's future potential was not too low.
Thus, a good ratio of high compatibility and future potential turned out to be the most important factor for Nial's final decision.
