Shield trigger (When this spell is put into your hand from your shield zone, you may cast it immediately for no cost.)
■ Choose two of your opponent's creatures and tap them. Those creatures don't untap at the start of your opponent's next turn and add the top card of your deck to your shields face down.
■ After you cast this spell from your hand, put it on one of your shields face up instead. (The stack is still considered one shield.)