Make this more coherent
This is called Weaving. If he isn't looking for a particular effect or if he wishes to draw on an aspect he is not as familiar with, he may Unleash -- call upon the pure possibility of the Mists.
This is called Weaving. Or, if he isn't looking for a particular effect or if he wishes to draw on an aspect he is not as familiar with, he may Unleash -- call upon the pure possibility of the Mists.