Is there a specific criteria to unlock the Tamed Griffin? I've played through this game with 5 or so different deck types, but the battle to get the Tamed Griffin only showed up during my Illusionist playthrough, making the 'increase attack/life of pet' rewards completely useless most of the time.
Perhaps, instead of dots you can put crosses. At times, the dots make it hard to see where a square is blank especially if you have a lot of dots in that area.