Final answer:
Isaac is likely using a TarotDeck Generator as it suggests a tool for randomly generating a tarot card. Mystic Card Selector and Divination Card Dispenser are possibilities but less explicit. Deck of Cards does not imply the randomness or generation process.
Step-by-step explanation:
Isaac has a tool that offers him a random tarot card every time it is used. From the given options, the tool he might be using that is most representative of this function would be a) TarotDeck Generator, as it implies a digital or mechanical mean of generating a random selection from a deck. Mystic Card Selector and Divination Card Dispenser could also be suitable names though they are less explicit about the randomness or utility of the tool. However, 'Deck of Cards' is not specific to the action of generating a card randomly and often refers to the physical object itself without any indication of the generation process.
When Isaac uses his tool, similar to drawing cards from a 52-card deck, each selection is random and it's possible to pick the same card more than once if the card is replaced and the deck is reshuffled, as in the example of selecting the {Q of spades, 10 of clubs, Q of spades}.