Complex sentence: The Vos were once dedicated to the god Vorynn, the old god of magic, but they were lured by the evil god Azrai and fought at his side at the battle of Mount Deismaar.
Split into simpler sentences: The Vos were once dedicated to the god Vorynn, the old god of magic. But they were lured by the evil god Azrai and fought at his side at the battle of Mount Deismaar.