A mechanic of being able to merge 2 cards into one, just like the mashup madness of clash of clan s, there would be a new slot where you would put your 2 cards that you want to merge and thus you would have a deck of 6 cards
A mechanic of being able to merge 2 cards into one, just like the mashup madness of clash of clan s, there would be a new slot where you would put your 2 cards that you want to merge and thus you would have a deck of 6 cards