Basically, the concept of time is targeting a person or thing and adjusting the time element around them. This is basically the basis of cosmic magic. And only those who have an affinity to it are able to use it, me being the exception. But that is mainly because of my amazing op system. But from what I am looking at, now that I am really picking this magic circle apart. The runic equation can be changed in many ways. Like, let's say you want to cast haste on someone to make them quicker only speed wise. You can do it without aging the person. If you want to slow a target to a crawl, you can do the same thing. And if you wish to kill someone, you can easily attack their age and fast forward it to the point that they die.