This is a sealed Sorcery: Contested Realm Alpha Booster Box released by Erik's Curiosa Limited.
 
The Sorcery: Contested Realm Alpha Booster Box contains 39 booster packs each containing 15 cards
Each 15-card booster contains 11 Ordinary cards, 3 Exceptional cards and 1 Elite or Unique card. The set includes 403 cards, each with a premium holographic foil version.

Also included: 1x Box Topper pack