1. you click INFO button. You can max stamina 1 by 2000 points. It is very expensive and impossible.
2. So you earn Gold money to Buy a Clothes to go Stamina up. You can buy them from Shop. It is Yellow color thing.
3. Maybe You don't know Card Upgrade systems. In your home. click attack Card. You can Upgrade Cards by Points. and it is very important. SEINE Card need 4 Stamina If you upgrade the card.
4. Buy Card deck. and Remove needless Cards to earn Points. (in Attack Card System)