600 Minister Billy Bob
Using [Elemental Affinity] to activate hand drawn spells was definitely not optimal, but the fact that he could draw them himself and activate them meant that Wolfe could eventually use most types of magic to a very basic degree.
That was probably also the training method that the Magi used to guide their own progress, as according to the history lesson in the memory crystals he had seen, most didn't start with all the affinities that they would develop, they worked to shape their progression over time.
If Wolfe had started working on Earth Magic at Rank One, he might have actually developed the skill to have an actual affinity for it by now.
But Lightning and Unholy Adept affinities were more than enough for him most of the time, and the fact he could use fire, gravity and air magic as well was enough versatility to keep him happy.