Raesh is a wild-magic barbarian, though he does not know that yet. His halfling family has tried over and over to teach him magic, but he cannot harness it like they do, not even to cast the simplest of spells. When his family visited Isondale, Fip would often try to teach him how to cast spells with the same disappointing results. He has grown to use his rage to focus his energies and make himself stronger in battle, but this will eventually come out as wild magic and have strange effects. So really, Raesh did not choose the path, but it was inevitable considering the training and ambient magic he has been around for most of his life.