Final answer:
To maximize your chances in this game, you should guess that the dealer turns over all 520 cards before finding the 5 Kings.
Step-by-step explanation:
To maximize your chances in this game, you should guess that the dealer turns over the maximum number of cards possible before finding the 5 Kings. Since there are 10 standard decks with 520 total cards, in order to maximize your chances, you should guess that the dealer turns over all 520 cards before finding the 5 Kings. This guess allows for the most possible card turns before the game ends.