Injecting a thought into someone’s subconscious is a feat to remember, but let’s take this card trick a bit further. Ask your spectator where a specific card is in the deck. Naturally, they won’t know because they have just thoroughly shuffled it. You announce that subconsciously they already know where their card is. Have them deal the cards onto the table until they ‘feel’ like they have reached their selected card, they then place that card face down on the pile.