Warning: Contains SPOILERS for X-Men 97 #4! X-Men 97 is the groundbreaking continuation of the classic 90s animated series, as the character developments of every major X-Men hero and villain were utterly superb – including and especially Magneto. However, the show left one question lingering in regard to the Master of Magnetism: how did he get Xaviers will? While it was implied that Magneto was simply contacted by Xaviers attorney since he was named in his will, it turns out that wasnt the case, as the real answer links a surprise villain.

https://screenrant.com/x-men-97-how-magneto-discovered-xavier-will/