Every fey had clear aptitudes. This was common knowledge in the fey world.
This was especially evident when the feys reached Fantasy Breed. Because they only had a few abilities and exclusive skills, their aptitudes could be clearly discerned.
Once the fey reached Immortal Breed and gained more abilities and exclusive skills, their aptitudes could become buried by the slew of other abilities.
Taking Chimey as an example, its abilities looked perfect, but it was actually inept at defense. It was also lacking controlling abilities!
However, because Lin Yuan had contracted many feys, their abilities could complement each other's aptitudes and make up for their flaws.
Shiny's abilities could be considered fully comprehensive.
The ability Snapped Neck Falling Death was an extremely strong deadly ability that could extract souls.