At the effect's climax

WHAT IS THE AUTOSTEREOGRAM CARD:

an unusual murder weapon continues to exhibit homicidal tendencies

X-Ray Card Stab - Nathan's 'real work' on the X-ray Card Stab

And most importantly

Joker Surprise | Wolfgang Riebe - (Download) Nicola At the effect's climaxIf you are searching for a visual 'packet style' card trick with normal (even borrowed) cards, then this is the trick for you! Three red numbered cards are removed from a regular deck of cards and all simultaneously shown to be normal cards. One at a time, each card changes into a Joker. The last change is the most visual of them all. The cards are clearly all shown to be Jokers and instantly they change back into the original three normal red