[Shield trigger] Shield Trigger
You may add a card from your hand to your shields face down. If you do, choose 1 of your shields and put it into your hand. You can't use the "shield trigger" ability of that shield.
Look at your opponent's hand and choose 1 card from it. You may add that card to your opponent's shields face down. If you do, choose 1 of your opponent's shields and put it into their hand. They can't use the "shield trigger" ability of that shield.