Beta Format, also referred to as Special Format in early descriptions, is a format that was used at some Win-A-Mat events. Introduced at YCS Chicago (April 10-12, 2015), it incorporates the Advanced Format with additional restrictions on Summons. As of January 24, 2016 (at the latest), it is no longer being used at big events due to lack of interest. This format makes a comeback in the 2017 WCQ: European Championship.