Capacity for magic is In the Blood. A fantasy race or species for whom magic, or the ability to use it, is inherent in a setting where not everyone can do it. This usually means that the ability is present in every member of the species. How well the members can tap into this ability can vary; in some cases, every member naturally seems to be adept at it, other times the ability to use magic needs to be honed. The variation might stem from conflicting historical views on witchcraft.