Guess the opponent's card, choose the optimal card to win.

Hello everybody!
In recent seasons, players often choose water type to play. Including mouse increase armor, summer increase magic. To fight this formation, we choose the earth type. The summer reduce armor and the top magic counter-dame, then 1 magic resist, next 1 hit the last card, the rest is self-selected to give enough mana. If we see the last time the opponent chooses the earth type and we choose the water type so we will choose the death type to fight the earth type. If the last time the opponent chooses the water type and we choose the water type, we will choose the earth type to fight the water type.