Bloomburrow - Prerelease Pack CaseRules Text Contains: In Bloomburrow, the Valley is threatened by elemental forces raging out of control, and salvation falls on the shoulders of its smallest protectors. Players will put their best paws forward, fighting alongside mice, frogs, bats, birds, and myriad other critters to restore the balance of peaceand prove bravery comes in all sizes. Prerelease is your communitys first opportunity to get their hands on the newest Magic: The Gathering