Cardhoarder is an online retailer serving players of Magic: The Gathering Online (MTGO). The company has offered Magic card singles and rental services since 2005, helping customers build and access collections for online play. Its website provides a card search and deck editor, along with options to sell a collection and sell tickets. Customers can also find event tickets, store or bot credit, full sets, and DEK files.

Cardhoarder’s Loan Program lets players apply to rent cards, and the site also offers a card binder and Card Keeper tools. Support resources include a beginner guide to Magic Online, a collection-selling guide, frequently asked questions, and customer service. The company lists customer service hours throughout the week, with different opening times on weekdays and weekends. Additional site offerings include a merchandise shop and an affiliate program.

Cardhoarder, LLC operates the service and states that it is not affiliated with, endorsed by, or sponsored by Wizards of the Coast, the owner of Magic: The Gathering and its related properties.