Opening Ceremony 
Sorcery
Add 
. You may open a sealed Magic booster pack. Until end of turn, you may cast spells from among the cards in that booster pack.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL