The official Pokémon website as now officially revealed that specially marked General Mills Cereal Boxes contain a special three-card Pokémon TCG booster pack. Many stores have had these in stock since February 2021.

Three-card Pokémon TCG booster packs in General Mills Cereal Boxes

Go cuckoo for Pokémon TCG cards with General Mills for a limited time.

If you're looking for an excuse to eat delicious cereal for breakfast, lunch, and dinner, the Pokémon Trading Card Game is dishing up the perfect opportunity. For a limited time, select General Mills cereals including Golden Grahams, Trix, Cocoa Puffs, Cinnamon Toast Crunch, and Lucky Charms will contain a special three-card Pokémon TCG booster pack. Each pack will contain one foil Pikachu card and two additional Pokémon. In total, there are 14 unique collectible cards—although the Galarian Ponyta card will only be available in family-sized cereal boxes at Walmart.

This mouth-watering opportunity to celebrate 25 years of Pokémon while eating your favorite cereal is only available for a limited time!

Source: https://www.pokemon.com/us/pokemon-news/three-card-pokemon-tcg-booster-packs-in-general-mills-cereal-boxes/