Learning and mastering a spell was easy......well it wasn't that easy, but the crux of the matter was that, modifying a spell was a whole other ball game. Alex had the feeling that he could use Mana, and hence also learn magic, but he didn't want to bite off more than he could chew so he had instead chosen to focus on cultivation. However he had taken to studying a bit, and he knew the fullest measure of a mage, was when finally they made a spell their own, or created a spell of their own. Basically making a spell your own, is to modify it into something that serves and suits you better, creating a new spell formula, and adding more spells to the spell tree of the spell you had chosen to modify.