Opening Ceremony is a mythic Sorcery card from Unfinity (UNF), collector number 118. Current market price: $0.36 (foil $0.33), TCGplayer market prices via Scryfall.
Add {W}{U}{B}{R}{G}{C}. You may open a sealed Magic booster pack. Until end of turn, you may cast spells from among the cards in that booster pack.