> Create a self-working card trick that relies on pre-setting the deck and doesn't require any slight of hand.

Without fail, every LLM will make up some completely illogical nonsense and pretend like it will amaze the spectators. You can even ask it really leading follow up questions and it will still give you something like:

- Put an Ace of Spades at position 20

- Have your spectator pick a random card and place it on top

- Take back the deck and count out 20 cards

- Amaze them by showing them that their card is at position 20