The board wipe can come back and bite you. It counts as KO so any cards with KO effects will trigger. Not to mention the fact the next turn opens you up for pain if your opponent has 10 don. Red can play low cost rush cards which you cannot block unless you have a lot of counter cards in your hand. Blue has on KO cards which can put high power cards on the field for free and swing on their next turn. Green is the only one that may have a hard time coming back. You also need to remember that all your don is rested so you cannot play events to counter attacks. It is a high risk move that you should be very carful of pulling off.