This new system, dubbed "Bravely Second," allows for the aforementioned time-stopping antics, but relies on your current level of "SP." Once you've used your special power, your SP decreases. You can gain more SP by putting your 3DS into sleep mode, though as Siliconera points out, this is a slow process, with one SP point being added for every eight hours of idle time. If you'd rather not wait however, there's always the option to purchase potions from the Nintendo 3DS eShop that refill your SP.