From the warlocks of course. But may I remind you that that was a time of momentary peace between two people. Two lovers. One female warlock and one male hunter. The technique was shared as a sign of compassion for the other. Of course, this is only educational knowledge. Warlocks do not poses knowledge of the hunt. You should have seen them floofing around trying to hunt the Ahamkaras. If hunters hunted them, which they would not because they are not morally blind, the hunt would have taken 1/10 of the time.