What was created by the Transcendent Core within oneself was based upon two factors. First was the simplest, the cultivation technique. This was shown by the Divine Wood Bears cultivation technique which allowed them to create an inferior version of the fountain of youth. The Second factor which was arguably more important, was the personality and traits of that person. For example, although Lucius did not know this, the reason his Core was making a material for him to use in the construction of a weapon, armour or something else was because he was most suited to and most enjoyed blacksmithing. He had effectively created infinity metal to be used in the future.