Ymirjar le-Peyroux was a great magician, possibly the greatest of them all. He was born about 3,000 years ago, when the magic arts were still not widespread among humans.
Back then, magic's inheritance relied on bloodlines, as well as some insane, brutal experiments, which were extremely resource-intensive. This resulted in the commoners lacking even the most basic understanding of magicians, which caused the commoners to be very fearful and hostile. In that era, the guardian deity of humans was the God of Knights. In the eyes of the human world, magic was still a dangerous art that was best avoided.
Ymirjar le-Peyroux was originally a mage apprentice. Actually, they weren't even called mages back then, but sorcerers. He began his journey by learning the dangerous and cruel black magics, which focused on destruction and plundering.