What had cora's farther done to magus to make magus dislike him so?

Cora's father had betrayed Magus by undermining his trust and ambitions, possibly through deceitful actions that directly impacted Magus's life or goals. This betrayal fostered a deep sense of resentment and animosity in Magus towards Cora's father. The specifics of the incident may involve personal or professional conflicts that left a lasting impression on Magus, solidifying his dislike. Overall, the action was significant enough to create a rift between them that shaped their relationship moving forward.