The 2X Rewards event is a free-to-player's best friend. During the active window, every daily and weekly quest pays out double its normal coin and reroll value, which lets F2P players close the gap with paid users.
The DOUBLE code is still verified working as of July 2026. It is the highest-value free reroll bundle currently in the rotation.
Players aiming for a single Captain card should stack this event with AFK farming macros to maximize reroll yield per hour.