This card doubles the compounded interest rate at the Ant Bank from 2% to 4%. Every 30 minutes of in-game time, Berry balance is multiplied by 1.04. When starting from a balance of 500 Berries, after 30 minutes, the balance will be 520 Berries. Interest is capped at 75 berries per 30-minute period (requires a balance of 1,875 or greater.)
How to Acquire
After depositing 500 Berries into the Ant Bank, the Banker will give this card.