Thanks for the comments guys. It's not an ego or cardini because there is no action (clean up) after the card changes. And It is misdirection, once you find how the change is done, you will see what I mean.
I have to admit you totally got me. Focus of attention. You got me looking where you wanted me to look and I saw an event. I didn't see the other event until it had been pointed out... even if it was dark.