Mage Cards is a UK-only marketplace connecting Magic: The Gathering players and game stores who want to buy or sell individual cards. Its focus is making the exchange of MTG singles straightforward, with a simple search experience for buyers and an easy-to-use interface for sellers. The site features card listings, top sellers, valuable cards, recent additions and collections organised by set. Buyers can also use MageFinder to search for several cards at once, browse decks and explore Magic sets.

Payments are held by the platform until the buyer confirms that an order is satisfactory. Mage Cards also provides buyer and seller guides, information about card condition and packaging, and details on buyer and seller protection. By limiting participation to UK-based buyers and sellers, the marketplace aims to connect the local MTG community while avoiding the customs charges and complexities associated with cross-border transactions. Mage Cards describes its community as having more than 9,000 members and offers resources including a deck builder, articles, community rules and customer support.