"A flawless piece of astonishment art featuring an exquisite method that's as heart stopping as the effect."
You write a prediction with a normal sharpie on the clear cellophane of the card case. Tragically, it's the wrong card.
Everyone stares at the INK on the cellophane... for a moment nothing happens... then like some kind of weird dream creature the INK begins to SLOWLY CREEP and GLIDE along the cellophane... the animated INK gradually RE-SHAPING itself into the correct card! You actually see the black INK STRETCH and get longer in some areas... and SHRINK and contract in others as it VISIBLY MORPHS into the correct prediction.
A spectator can then immediately rub their fingers over the transformed INK to Erase the writing... once again leaving the CLEAR UNMARKED CELLOPHANE. Right after that... you can hand out the case for EXAMINATION. It's just a NORMAL case!