* God Cards are from a different era: The God Cards (Slifer the Sky Dragon, Obelisk the Tormentor, and The Winged Dragon of Ra) were introduced in the original Yu-Gi-Oh! anime and were not included in the Nightmare Troubadour card pool.
* Nightmare Troubadour's limited card pool: This game focuses on a specific subset of cards. The God Cards were not part of that selection.
How to Get Powerful Cards in Nightmare Troubadour:
1. Packs: You can purchase booster packs in the game, which give you a chance to obtain rare and powerful cards.
2. Events: The game frequently has special events where you can earn unique cards or special rewards.
3. Trading: You can trade cards with other players.
4. Duels: Winning duels earns you rewards like card packs and other items.
Remember, the game's balance is based on its card pool. Even without the God Cards, you can build powerful decks and have fun playing Yu-Gi-Oh! Nightmare Troubadour.