Duskmourn: House of Horror - Collector Booster Omega Box (DSK)Rules Text Contains: Unlock Duskmourns gallery wing and claim the Houses greatest treasures before the House claims you! Each spirit busting Collector Booster contains Rares and or Mythics, Traditional Foils, Borderless cards, and Full Art Lands. This Duskmourn: House of Horror Collector Booster contains 15 Magic: The Gathering cards and 1 Traditional Foil double sided token, with a combination of 5 cards of rarity Rare or higher, 4 Uncommon, 5