Each Disney Lorcana: Ursula's booster box contains 24 booster packs with each booster pack containing 12 cards.

A storm has been building in the magical realm of Lorcana. A powerful Ursula glimmer, unleashed from the Great Illuminary, is at last ready to put plans into motion. How far will the sea witch go to gain power over all Lorcana?
In this new set, the ruthless and power-hungry sea witch Ursula — who was freed from the Illuminary in the second set, Rise of the Floodborn — is ready to put her malevolent plans into motion and take over Lorcana with only the players and their trusted glimmers standing in her way. Ursula’s Return will introduce new franchises, beloved characters, and new gameplay evolutions and reveal more of the story of Lorcana and the Illumineers summoned there.