something like that, yah.
Step 1 could be achieved by multiple ways, like switching all the face-down cards to be square (should be trivial for a magician); or using some kind of force card.
Step 2 is even simpler, the plate and ink are designed to show square pattern after certain time, it is preplanned, you do not need to do anything.
Step 1 could be achieved by multiple ways, like switching all the face-down cards to be square (should be trivial for a magician); or using some kind of force card.
Step 2 is even simpler, the plate and ink are designed to show square pattern after certain time, it is preplanned, you do not need to do anything.