The Magic: The Gathering Tarkir: Dragonstorm Prerelease Pack is a special release associated with the set Dragons of Tarkir, which was part of the Tarkir block. The Prerelease Packs are often used during the prerelease events before the set becomes fully available. These packs give players a taste of the set and typically include special packaging, unique promotional cards, and a selection of cards that provide players with a fun, thematic experience related to the new set.