■ When you put this D2 Field , choose one of your opponent 's creatures and tap it. That creature doesn't untap while you have this D2 Field . (Whenever another D2 Field is put, destroy this D2 Field .) Denjara Switch : At the start of your opponent 's turn , you may turn this D2 Field upside down for the rest of the game . If you do, untap all your creatures and they get " blocker " until the end of the turn .