Board Thread:Spoilers!/@comment-27060727-20171014181959/@comment-31828520-20171209222719

The fact is the show has never clearly said how magic works therefore we don't know for sure so no one can say for a FACT that magic works only one way. For all we know MORE people could be born with magic than realized but if they never develop it, then they would never know they had magic. I honestly don't think Regina was trying to manipulate Henry when she told him she could teach him magic. That was her trying to win Henry over. Cora went without magic until her early adult years and so did Regina. Had Rumple not been around those two most likely never would have known they could do magic.