Complex sentence: Each prize revealed during the course of play was placed in a holding area for that contestant, each prize card was replaced with the next card off that contestant's deck, and the match's winner received the prizes he or she revealed.
Split into simpler sentences: Each prize revealed during the course of play was placed in a holding area for that contestant, and the prize card was replaced with the next card off that contestant's deck. Only the match's winner received the prizes he or she revealed.