Warlock

Tradition doesn’t always produce the desired results when training a new student of the spirit world. Warlocks occurred by virtue of a sort of spiritual contagion, and have occurred all across the world and in every culture. The warlock is a person touched by the spirits, marked by the wild ones. They were not originally seen as evil people, but they were not well trusted in general because their behaviour could in a sense be called “mad.”

In the case of the warlock phenomenon, I think it would even be possible to train someone as one who is not otherwise innately disposed toward it. The practices of the Sufi dervishes and voodoo ritualists might be an example.