Here's why:
* "Light and Darkness Dragon" is a card from the Yu-Gi-Oh! Trading Card Game (TCG). It is not a card available in the "Yu-Gi-Oh! Spirit Caller" game, which is a separate mobile game with its own unique card pool.
To obtain "Light and Darkness Dragon" in the TCG, you would need to:
* Purchase booster packs: It is commonly found in various booster sets.
* Trade with other players: You can trade cards with other players to obtain cards you don't have.
* Buy single cards: Some stores or online marketplaces sell individual cards.
Note: The availability of specific cards can change depending on the current booster sets and the popularity of the card.