What formats are supported?
The format choice is up to the organizer. Any style that the players will enjoy is welcome—even “anything goes” or mixed formats (like the Pro Tour’s upcoming constructed then draft format). The organizer announces the format ahead of time so everyone knows what to bring. Once an announced event begins, the format is locked in, but running alternating formats over many weeks (such Standard on the first weekend of the month, Extended the next, then Draft, and then Open) is encouraged. What formats are played is up to the organizer and what the players want.