Greek magic is the discourse of magic within the ancient Greek world. Greek magic includes a range of practices, from malevolent curses to benevolent protections, from divinatory practices to alchemical procedures, but what is labelled magic depends on who is doing the labelling and the circumstances in which the label is applied. The discourse of magic pertains to non-normative ritualized activity, in which the deviation from the norm is most often marked in terms of the perceived efficacy of the act, the familiarity of the performance within the cultural tradition, the ends for which the act is performed, or the social location of the performer. Magic is thus a construct of subjective labelling, rather than an objectively existing category. Rituals whose efficacy is perceived as extraordinary (in either a positive or negative sense) or that are performed in unfamiliar ways, for questionable ends, or by performers whose status is out of the ordinary might be labelled (by others or by oneself) as magic in antiquity.