A blue Theme booster from Innistrad: Crimson Vow.
The full moon paints Innistrad’s sky crimson red; a night without end has only just begun. Fierce werewolves and a never-ending stream of undead creep through the shadows, but the cunning vampires also get their act together. The noble Olivia Voldaren is the bride in the biggest party of Innistrad's history - a wedding to die for.
A blue theme booster is a special booster with all blue cards. Because the cards in this theme booster connect well to each other, building a new deck is quick and easy. After adding basic lands you are ready to play.
A theme booster contains 35 Magic: the Gathering cards, one of which is rare and several uncommons and commons. In more than one in eight theme boosters you will not find a rare, but a mythic rare!
Note: the description is machine translated and might contain errors.