Magic The Gathering Proxies Magic The Gathering Proxies Magic the gathering: Where do i buy proxy cards? I want to try. Magic the gathering: Where do i buy proxy cards? I want to try. 30 Sep 2007. You can't buy proxy cards. A proxy card is any random spare card u have that u use as a substitute by either agreeing with your opponent or by marking it. If your deck uses sleeves, you can put a piece of paper inside with it detailing what the actual card does. if... read more
