Each Strixhaven Collector Booster Pack contains 15 Cards, of which at least 3 Mystical Archive cards (1 Traditional Foil Uncommon, 2 Foil Etched Uncommon, Rare or Mythic Rare) in every pack. 
Find 1 Foil Etched Japanese Alt-Art Mystical Archive card in every pack and up to 2 additional Japanese Alt-Art Traditional Foils!