Every battle, based on the intensity, will reward you with BAS and elemental stone fragments according to your earning level and difficulty level. The final boss will drop a large number of BAS. These rewards are not that easy to obtain; it requires various strategies and efficient card combinations. You can opt for the “stage-accumulated power” with higher earnings but also higher risks, challenge the final boss in a shorter time and collect your max earnings. You can also opt for the “stage-accumulated earnings” with lower earnings but also lower risks, and extend the length of your line of daily earnings. The pros and cons are obvious: the time you spend in the game and the Power consumed by a Dracoo in a battle (For each battle, a Dracoo consumes 0.23 points of Power).