Marvel Snap has been a huge debut success for Second Dinner, the studio created by Blizzard alumni. But if one feature has been missing since launch, it’s that mainstay of card games: a draft mode. Snap is finally preparing to launch its own spin on Draft with a new mode coming Monday, August 24, and GameSpot got an exclusive first look. Draft will be a Limited Time Game Mode (LTGM) at launch, similar to other modes like Grand Arena, Team…