Aster chuckled but didn't deny it, instead of that his golden eyes glowed as he carefully observed all the process of Sarina using the ability that her lineage granted her.
Now, not all the lineages made their respective owners, manifest a physical trait in the infant stage, it varied from lineage to lineage, for example, Eris and Mylene, those two come from a "bloodline" type family, similar to the Drage, which means that the center of power of their families is their lineage.
Lineages are technically the "easiest" kind of special power to obtain, since in most cases they are passed down to offspring without any problem, in comparison constitutions don't work like that, even if one of the parents has a constitution, their children might or might now inherit it.
That being said, the previous doesn't make lineages weak or common, in the strict meaning of the word, anyone who can legate something through its blood to its descendants, is creating a lineage.