These two easy to find cards will turn the duel around. The two cards are DNA surgery and insect barrier. The effect of DNA surgery allows you to select one type of monster and make every monster in your opponents deck and your deck turn into the selected type.  If you choose insect then the effect of insect barrier which is all of your opponent's insect type monsters can not attack.  This will make it so your opponent cannot attack as long as these two cards are on the field.

Zach Wolf - Houston, TX