Lock wanted heros


Many times i have accidentally up graded my heros with ones i wanted to keep is there a way that the creatures of the game could make it to where we can put a lock on the charectors we do not want to loose. Please check into this it would be very helpful also a players guide would be also i am still trying to learn the game however i do love it


There is a favorite button on the upper left corner of the card to prevent this