50 Different Cards

15 Ultra Rares
35 Super Rares

Ultra Rares Also Come In Premium Gold Rare
Super Rare and Ultra Rare cards also come in Secret Rare or Collector’s Rare

4 Cards Per Pack

Each Pack has the following:
– 2 Super Rares
– 1 Ultra Rare
– 1 Collector’s Rare/Secret Rare/Premium Gold Rare

Source