An envelope having an envelope wall member including first and second envelope walls that cooperatively enclose a pocket space and define therebetween a pocket opening to the pocket space, the envelope wall including a surface that defines a recess and a sealing strip that includes an adhesive releasably adhering the strip to the envelope wall member within the recess. This may be preformed using sequential implants, implants of the first species and second species that are at least partially simultaneous, or a molecular species comprising an atom selected from Group III and an atom selected from Group VII. The inflation member is positioned within the constricted passageway. Each 3-card play and each 5-card play within a single round may give rise to corresponding wagers from a player.