Some of the best Gwent cards can be found in the game's main story, by completing quests and winning matches against other players. You can also buy card packs from merchants, which gives you a random selection of new cards. The Nilfgaardian Empire and Monsters decks are particularly popular, and have some of the most powerful cards in the game.
Witcher 3 How To Get Gwent Cards at Jason Pierre blog
The Skellige deck is another favorite among players, with its strong emphasis on melee attacks and weather effects. You can also get special cards by completing certain quests or achieving specific goals, which adds an extra layer of challenge and excitement. As you collect more cards, you'll start to see how they fit into different strategies and playstyles.
